IPWorks SSH 2022 PHP Edition
Version 22.0 [Build 8369]

SSHServer Class

Properties   Methods   Events   Config Settings   Errors  

The SSHServer class is used to create Secure Shell (SSH) servers. The class handles multiple simultaneous connections on the same TCP/IP port (service port). It is designed to balance the load between connections for a fast, powerful server.

Class Name

IPWorksSSH_SSHServer

Procedural Interface

 ipworksssh_sshserver_open();
 ipworksssh_sshserver_close($res);
 ipworksssh_sshserver_register_callback($res, $id, $function);
 ipworksssh_sshserver_get_last_error($res);
 ipworksssh_sshserver_get_last_error_code($res);
 ipworksssh_sshserver_set($res, $id, $index, $value);
 ipworksssh_sshserver_get($res, $id, $index);
 ipworksssh_sshserver_do_changerecordlength($res, $channelid, $recordlength);
 ipworksssh_sshserver_do_closechannel($res, $channelid);
 ipworksssh_sshserver_do_config($res, $configurationstring);
 ipworksssh_sshserver_do_disconnect($res, $connectionid);
 ipworksssh_sshserver_do_doevents($res);
 ipworksssh_sshserver_do_exchangekeys($res, $connectionid);
 ipworksssh_sshserver_do_getsshparam($res, $payload, $field);
 ipworksssh_sshserver_do_getsshparambytes($res, $payload, $field);
 ipworksssh_sshserver_do_openchannel($res, $connectionid, $channeltype);
 ipworksssh_sshserver_do_reset($res);
 ipworksssh_sshserver_do_sendbytes($res, $channelid, $data);
 ipworksssh_sshserver_do_sendchanneldata($res, $channelid, $data);
 ipworksssh_sshserver_do_sendsshpacket($res, $channelid, $packettype, $payload);
 ipworksssh_sshserver_do_sendtext($res, $channelid, $text);
 ipworksssh_sshserver_do_setsshparam($res, $payload, $fieldtype, $fieldvalue);
 ipworksssh_sshserver_do_shutdown($res);
 ipworksssh_sshserver_do_startlistening($res);
 ipworksssh_sshserver_do_stoplistening($res);

Remarks

The SSHServer class is the SSH-enabled equivalent of the IPWorks TCPServer class, extended by a set of new properties and events that deal with SSH security. The SSHCompressionAlgorithms and SSHEncryptionAlgorithms properties determine which protocols are enabled for the SSH handshake. The SSHCert* properties are used to select a certificate for the server (please note that a valid certificate MUST be selected before the server can function). The SSHUserAuthRequest event will allow you to use authenticate clients using digital certificates or passwords. Finally, the SSHStatus event provides information about the SSH handshake and underlying protocol notifications.

By default, each instance of SSHServer can handle up to 1000 simultaneous incoming connections (this number may be increased up to 100,000, or decreased to a lower value by using the MaxConnections configuration setting).

SSH connections are identified by a ConnectionId. Events relating to these connections as a whole will use the ConnectionId to identify the specific connection. Connections may also contained one or more multiplexed channels, which are identified by a ChannelId. Channel-level events will specify the ChannelId to which they relate.

SSHServer can start to listen on a port by setting the Listening property to True. When a remote host asks for a connection, the ConnectionRequest event is fired. At that point, the connection can either be accepted or rejected. If the connection is accepted, a ConnectionId is assigned, and communication can start. From this point on, the operation is very similar to SSHClient. Data can be sent to an individual SSHChannel using SendChannelData. The address and port of the incoming connection can be found by querying the ClientRemoteHost and ClientRemotePort properties.

Note: Server components are designed to process events as they occur. To ensure that events are processed in a timely manner, DoEvents should be called in a loop after the server is started.

Property List


The following is the full list of the properties of the class with short descriptions. Click on the links for further details.

SSHChannelCountThe number of records in the arrays.
BytesSentThe number of bytes actually sent after a sending channel data.
ChannelIdAn id generated by the class to identify the current SSH channel.
DataToSendA string of data to be sent to the remote host.
ReadyToSendThis property is True when data can be sent over the SSH Channel.
RecordLengthThe length of received data records.
ServiceThis property holds the channel type that was requested when opening the channel.
ConnectionBacklogThis property includes the maximum number of pending connections maintained by the Transmission Control Protocol (TCP)/IP subsystem.
SSHConnectionCountThe number of records in the SSHConnection arrays.
SSHConnectionConnectedUsed to disconnect individual connections and/or show their status.
SSHConnectionLocalAddressThis property shows the IP address of the interface through which the connection is passing.
SSHConnectionRemoteHostThe RemoteHost shows the IP address of the remote host through which the connection is coming.
SSHConnectionRemotePortThe RemotePort shows the TCP port on the remote host through which the connection is coming.
SSHConnectionTimeoutA timeout for the class.
DefaultAuthMethodsSpecifies the supported authentication methods.
DefaultIdleTimeoutThis property includes the default idle timeout for inactive clients.
DefaultTimeoutAn initial timeout value to be used by incoming connections.
KeyboardInteractiveMessageThe instructions to send to the client during keyboard-interactive authentication.
KeyboardInteractivePromptCountThe number of records in the KeyboardInteractivePrompt arrays.
KeyboardInteractivePromptEchoSpecifies if the client should echo the value entered by the user or not.
KeyboardInteractivePromptPromptThe prompt label/text the client should present to the user.
ListeningIf set to True, the class accepts incoming connections on LocalPort.
LocalHostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
LocalPortThe TCP port in the local host where the class listens.
SSHCertEncodedThis is the certificate (PEM/base64 encoded).
SSHCertStoreThis is the name of the certificate store for the client certificate.
SSHCertStorePasswordIf the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
SSHCertStoreTypeThis is the type of certificate store for this certificate.
SSHCertSubjectThis is the subject of the certificate used for client authentication.
SSHCompressionAlgorithmsA comma-separated list containing all allowable compression algorithms.
SSHEncryptionAlgorithmsA comma-separated list containing all allowable encryption algorithms.

Method List


The following is the full list of the methods of the class with short descriptions. Click on the links for further details.

ChangeRecordLengthChanges the length of received data records.
CloseChannelCloses a existing SSHChannel .
ConfigSets or retrieves a configuration setting.
DisconnectThis method disconnects the specified client.
DoEventsProcesses events from the internal message queue.
ExchangeKeysCauses the class to exchange a new set of session keys on the specified connection.
GetSSHParamUsed to read a field from an SSH packet's payload.
GetSSHParamBytesUsed to read a field from an SSH packet's payload.
OpenChannelOpens a new SSHChannel .
ResetReset the class.
SendBytesSends binary data to the specified channel.
SendChannelDataUsed to send data over an SSH channel.
SendSSHPacketUsed to send an encoded SSH packet to the server.
SendTextSends text to the specified channel.
SetSSHParamUsed to write a field to the end of a payload.
ShutdownThis method shuts down the server.
StartListeningThis method starts listening for incoming connections.
StopListeningThis method stops listening for new connections.

Event List


The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.

ConnectedThis event is fired immediately after a connection completes (or fails).
ConnectionRequestThis event is fired when a request for connection comes from a remote host.
DisconnectedThis event is fired when a connection is closed.
ErrorInformation about errors during data delivery.
LogFires once for each log message.
SSHChannelClosedFired when a channel is closed.
SSHChannelDataInFired when data is received on an SSH channel.
SSHChannelEOFFired when the remote peer signals the end of the data stream for the channel.
SSHChannelOpenedFired when a channel is successfully opened.
SSHChannelOpenRequestFired when a client attempts to open a new channel.
SSHChannelReadyToSendFired when the class is ready to send data.
SSHChannelRequestFired when the SSHHost sends a channel request to the client.
SSHChannelRequestedFired if the SSHChannelRequest was successful, any further processing for the channel request should be done here.
SSHServiceRequestFired when a client requests a service to be started.
SSHStatusShows the progress of the secure connection.
SSHTunnelClosedThis event will fire when a connected client attempts to close a tunnel.
SSHTunnelRequestedThis event fires when a connected client attempts to establish a forward or reverse tunnel.
SSHUserAuthRequestFires when a client attempts to authenticate a connection.

Config Settings


The following is a list of config settings for the class with short descriptions. Click on the links for further details.

AltSSHCertCountThe number of records in the AltSSHCert configuration settings.
AltSSHCertStore[i]The name of the certificate store.
AltSSHCertStorePassword[i]The password used to open the certificate store.
AltSSHCertStoreType[i]The type of certificate store.
AltSSHCertSubject[i]The alternative certificate subject.
KeyboardInteractivePrompts[ConnectionId]Specifies custom keyboard-interactive prompts for particular connections.
KeyRenegotiationThresholdSets the threshold for the SSH Key Renegotiation.
LogLevelSpecifies the level of detail that is logged.
MaxAuthAttemptsThe maximum authentication attempts allowed before forcing a disconnect.
ServerSSHVersionStringThe SSH version string sent to connecting clients.
SSHKeepAliveCountMaxThe maximum number of keep alive packets to send without a response.
SSHKeepAliveIntervalThe interval between keep alive packets.
SSHKeyExchangeAlgorithmsSpecifies the supported key exchange algorithms.
SSHMacAlgorithmsSpecifies the supported Mac algorithms.
SSHPubKeyAuthSigAlgorithmsSpecifies the allowed signature algorithms used by a client performing public key authentication.
SSHPublicKeyAlgorithmsSpecifies the supported public key algorithms for the server's public key.
SSHVersionPatternThe pattern used to match the remote host's version string.
UserAuthBanner[ConnectionId]A custom user authentication banner.
AllowedClientsA comma-separated list of host names or IP addresses that can access the class.
BindExclusivelyWhether or not the class considers a local port reserved for exclusive use.
BlockedClientsA comma-separated list of host names or IP addresses that cannot access the class.
ConnectionUIDThe unique connectionId for a connection.
DefaultConnectionTimeoutThe inactivity timeout applied to the SSL handshake.
InBufferSizeThe size in bytes of the incoming queue of the socket.
KeepAliveIntervalThe retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
KeepAliveRetryCountThe number of keep-alive packets to be sent before the remotehost is considered disconnected.
KeepAliveTimeThe inactivity time in milliseconds before a TCP keep-alive packet is sent.
MaxConnectionsThe maximum number of connections available.
MaxReadTimeThe maximum time spent reading data from each connection.
OutBufferSizeThe size in bytes of the outgoing queue of the socket.
TcpNoDelayWhether or not to delay when sending packets.
UseIOCPWhether to use the completion port I/O model.
UseIPv6Whether to use IPv6.
UseWindowsMessagesWhether to use the WSAAsyncSelect I/O model.
BuildInfoInformation about the product's build.
CodePageThe system code page used for Unicode to Multibyte translations.
LicenseInfoInformation about the current license.
ProcessIdleEventsWhether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillisThe length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseFIPSCompliantAPITells the class whether or not to use FIPS certified APIs.
UseInternalSecurityAPITells the class whether or not to use the system security libraries or an internal implementation.

SSHChannelCount Property (IPWorksSSH_SSHServer Class)

The number of records in the arrays.

Object Oriented Interface


public function getSSHChannelCount();


Procedural Interface


ipworksssh_sshserver_get($res, 1 );


Default Value

0

Remarks

This property controls the size of the following arrays:

The array indices start at 0 and end at SSHChannelCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

BytesSent Property (IPWorksSSH_SSHServer Class)

The number of bytes actually sent after a sending channel data.

Object Oriented Interface


public function getBytesSent($sshchannelid);


Procedural Interface


ipworksssh_sshserver_get($res, 2 , $sshchannelid);


Default Value

0

Remarks

The number of bytes actually sent after a sending channel data.

The $sshchannelid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHChannelCount property.

This property is read-only and not available at design time.

Data Type

Integer

ChannelId Property (IPWorksSSH_SSHServer Class)

An id generated by the class to identify the current SSH channel.

Object Oriented Interface


public function getChannelId($sshchannelid);


Procedural Interface


ipworksssh_sshserver_get($res, 3 , $sshchannelid);


Default Value

''

Remarks

An id generated by the class to identify the current SSH channel. This id is unique to this channel.

The $sshchannelid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHChannelCount property.

This property is read-only and not available at design time.

Data Type

String

DataToSend Property (IPWorksSSH_SSHServer Class)

A string of data to be sent to the remote host.

Object Oriented Interface



public function setDataToSend($sshchannelid, $value);

Procedural Interface



ipworksssh_sshserver_set($res, 4, $value , $sshchannelid);

Default Value

''

Remarks

A string of data to be sent to the remote host. Write-only property.

Assigning a string to the DataToSend makes the class send the string to the remote host.

Note:It is recommended to use the SendText or SendBytes method instead of setting this property.

The $sshchannelid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHChannelCount property.

This property is write-only and not available at design time.

Data Type

Binary String

ReadyToSend Property (IPWorksSSH_SSHServer Class)

This property is True when data can be sent over the SSH Channel.

Object Oriented Interface


public function getReadyToSend($sshchannelid);


Procedural Interface


ipworksssh_sshserver_get($res, 5 , $sshchannelid);


Default Value

false

Remarks

This property is True when data can be sent over the SSH Channel.

When Timeout is set to 0 (asynchronous) sending data may result in an error if the channel or underlying socket cannot accept more data to send. Monitor SSHChannelReadyToSend or ReadyToSend to determine when data can be sent again.

When Timeout is set to a positive value the class will block when sending data until the data can be successfully sent and SSHChannelReadyToSend and ReadyToSend do not need to be monitored.

The $sshchannelid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHChannelCount property.

This property is read-only and not available at design time.

Data Type

Boolean

RecordLength Property (IPWorksSSH_SSHServer Class)

The length of received data records.

Object Oriented Interface


public function getRecordLength($sshchannelid);


public function setRecordLength($sshchannelid, $value);

Procedural Interface


ipworksssh_sshserver_get($res, 6 , $sshchannelid);


ipworksssh_sshserver_set($res, 6, $value , $sshchannelid);

Default Value

0

Remarks

The length of received data records. If set to a positive value, this setting defines the length of data records to be received. The class will accumulate data until RecordLength is reached and only then fire the SSHChannelDataIn event with data of length RecordLength. This allows data to be received as records of known length. This value can be changed at any time, including within the SSHChannelDataIn event.

The default value is 0, meaning this setting is not used.

Note:It is recommended to use the ChangeRecordLength method instead of setting this property.

The $sshchannelid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHChannelCount property.

This property is not available at design time.

Data Type

Integer

Service Property (IPWorksSSH_SSHServer Class)

This property holds the channel type that was requested when opening the channel.

Object Oriented Interface


public function getService($sshchannelid);


Procedural Interface


ipworksssh_sshserver_get($res, 7 , $sshchannelid);


Default Value

''

Remarks

This property holds the channel type that was requested when opening the channel. For instance "session" or "forwarded-tcpip".

The $sshchannelid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHChannelCount property.

This property is read-only and not available at design time.

Data Type

String

ConnectionBacklog Property (IPWorksSSH_SSHServer Class)

This property includes the maximum number of pending connections maintained by the Transmission Control Protocol (TCP)/IP subsystem.

Object Oriented Interface


public function getConnectionBacklog();


public function setConnectionBacklog($value);

Procedural Interface


ipworksssh_sshserver_get($res, 8 );


ipworksssh_sshserver_set($res, 8, $value );

Default Value

5

Remarks

This property contains the maximum number of pending connections maintained by the TCP/IP subsystem. This value reflects the SOMAXCONN option for the main listening socket. The default value for most systems is 5. You may set this property to a larger value if the server is expected to receive a large number of connections, and queuing them is desirable.

This property is not available at design time.

Data Type

Integer

SSHConnectionCount Property (IPWorksSSH_SSHServer Class)

The number of records in the SSHConnection arrays.

Object Oriented Interface


public function getSSHConnectionCount();


Procedural Interface


ipworksssh_sshserver_get($res, 9 );


Default Value

0

Remarks

This property controls the size of the following arrays:

The array indices start at 0 and end at SSHConnectionCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

SSHConnectionConnected Property (IPWorksSSH_SSHServer Class)

Used to disconnect individual connections and/or show their status.

Object Oriented Interface


public function getSSHConnectionConnected($connectionid);


public function setSSHConnectionConnected($connectionid, $value);

Procedural Interface


ipworksssh_sshserver_get($res, 10 , $connectionid);


ipworksssh_sshserver_set($res, 10, $value , $connectionid);

Default Value

false

Remarks

Used to disconnect individual connections and/or show their status.

The Connected is used to close connections.

Connected also shows the status of a particular connection (connected/disconnected).

How and when the connection is closed is controlled by the Linger property. Please refer to its description for more information.

Note:It is recommended to use the Disconnect method instead of setting this property.

The $connectionid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHConnectionCount property.

This property is not available at design time.

Data Type

Boolean

SSHConnectionLocalAddress Property (IPWorksSSH_SSHServer Class)

This property shows the IP address of the interface through which the connection is passing.

Object Oriented Interface


public function getSSHConnectionLocalAddress($connectionid);


Procedural Interface


ipworksssh_sshserver_get($res, 12 , $connectionid);


Default Value

''

Remarks

This property shows the IP address of the interface through which the connection is passing.

LocalAddress is important for multihomed hosts where it can be used to find which particular network interface an individual connection is going through.

The $connectionid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHConnectionCount property.

This property is read-only and not available at design time.

Data Type

String

SSHConnectionRemoteHost Property (IPWorksSSH_SSHServer Class)

The RemoteHost shows the IP address of the remote host through which the connection is coming.

Object Oriented Interface


public function getSSHConnectionRemoteHost($connectionid);


Procedural Interface


ipworksssh_sshserver_get($res, 13 , $connectionid);


Default Value

''

Remarks

The RemoteHost shows the IP address of the remote host through which the connection is coming.

The connection must be valid or an error will be fired.

If the class is configured to use a SOCKS firewall, the value assigned to this property may be preceded with an "*". If this is the case, the host name is passed to the firewall unresolved and the firewall performs the DNS resolution.

The $connectionid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHConnectionCount property.

This property is read-only and not available at design time.

Data Type

String

SSHConnectionRemotePort Property (IPWorksSSH_SSHServer Class)

The RemotePort shows the TCP port on the remote host through which the connection is coming.

Object Oriented Interface


public function getSSHConnectionRemotePort($connectionid);


Procedural Interface


ipworksssh_sshserver_get($res, 14 , $connectionid);


Default Value

0

Remarks

The RemotePort shows the TCP port on the remote host through which the connection is coming.

The connection must be valid or an error will be fired.

The $connectionid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHConnectionCount property.

This property is read-only and not available at design time.

Data Type

Integer

SSHConnectionTimeout Property (IPWorksSSH_SSHServer Class)

A timeout for the class.

Object Oriented Interface


public function getSSHConnectionTimeout($connectionid);


public function setSSHConnectionTimeout($connectionid, $value);

Procedural Interface


ipworksssh_sshserver_get($res, 15 , $connectionid);


ipworksssh_sshserver_set($res, 15, $value , $connectionid);

Default Value

0

Remarks

A timeout for the class.

If the Timeout property is set to 0, all operations return immediately, potentially failing with an 'WOULDBLOCK' error if data can't be sent or received immediately.

If Timeout is set to a positive value, the class will automatically retry each operation that would otherwise result in a 'WOULDBLOCK' error for a maximum of Timeout seconds.

The class will use DoEvents to enter an efficient wait loop during any potential waiting period, making sure that all system events are processed immediately as they arrive. This ensures that the host application does not "freeze" and remains responsive.

If Timeout expires, and the operation is not yet complete, the class fails with an error.

Please note that by default, all timeouts are inactivity timeouts, i.e. the timeout period is extended by Timeout seconds when any amount of data is successfully sent or received.

The default value for the Timeout property is 0 (asynchronous operation).

The $connectionid parameter specifies the index of the item in the array. The size of the array is controlled by the SSHConnectionCount property.

This property is not available at design time.

Data Type

Integer

DefaultAuthMethods Property (IPWorksSSH_SSHServer Class)

Specifies the supported authentication methods.

Object Oriented Interface


public function getDefaultAuthMethods();


public function setDefaultAuthMethods($value);

Procedural Interface


ipworksssh_sshserver_get($res, 16 );


ipworksssh_sshserver_set($res, 16, $value );

Default Value

'password,publickey'

Remarks

This property specifies the supported authentication methods. The client will choose one of the supported mechanisms when authenticating to the class.

This must be a comma separated list of values. For more information on authenticating clients see the SSHUserAuthRequest event.

The following is a list of methods implemented by the class:

noneThis authentication method is used by most SSH clients to obtain the list of authentication methods available for the user's account. In most cases you should not accept a request using this authentication method.
passwordAuthParam will contain the user-supplied password. If the password is correct, set Accept to true.
publickeyAuthParam will contain an SSH2 public key blob. If the user's public key is acceptable, set Accept to true. The class will then handle verifying the digital signature and will respond to the client accordingly.
keyboard-interactiveSSHUserAuthRequest will fire multiple times for keyboard-interactive authentication: It will fire once for each response sent by the client in the SSH_MSG_USERAUTH_INFO_RESPONSE packet (one for each prompt specified by the daemon). The index of each response will be specified as a suffix in AuthMethod, with AuthParam containing the response to the corresponding prompt (e.g keyboard-interactive-1, keyboard-interactive-2 and so on). Finally, SSHUserAuthRequest will fire one last time with AuthMethod set to "keyboard-interactive" and AuthParam set to an empty string. The daemon must set Accept to true every time to allow the authentication process to succeed.

Data Type

String

DefaultIdleTimeout Property (IPWorksSSH_SSHServer Class)

This property includes the default idle timeout for inactive clients.

Object Oriented Interface


public function getDefaultIdleTimeout();


public function setDefaultIdleTimeout($value);

Procedural Interface


ipworksssh_sshserver_get($res, 17 );


ipworksssh_sshserver_set($res, 17, $value );

Default Value

0

Remarks

This property specifies the idle timeout (in seconds) for clients. When set to a positive value, the class will disconnect idle clients after the specified timeout.

This applies only to clients that have not sent or received data within DefaultIdleTimeout seconds.

If set to 0 (default), no idle timeout is applied.

Note: DoEvents must be called for the class to check existing connections.

Data Type

Integer

DefaultTimeout Property (IPWorksSSH_SSHServer Class)

An initial timeout value to be used by incoming connections.

Object Oriented Interface


public function getDefaultTimeout();


public function setDefaultTimeout($value);

Procedural Interface


ipworksssh_sshserver_get($res, 18 );


ipworksssh_sshserver_set($res, 18, $value );

Default Value

60

Remarks

This property is used by the class to set the operational timeout value of all inbound connections once they are established. If the timeout is set to 0, all inbound connections will behave asynchronously. The default value is 60, meaning the class will behave synchronously.

Data Type

Integer

KeyboardInteractiveMessage Property (IPWorksSSH_SSHServer Class)

The instructions to send to the client during keyboard-interactive authentication.

Object Oriented Interface


public function getKeyboardInteractiveMessage();


public function setKeyboardInteractiveMessage($value);

Procedural Interface


ipworksssh_sshserver_get($res, 19 );


ipworksssh_sshserver_set($res, 19, $value );

Default Value

''

Remarks

This property should be set to the main instructions to send to the client during keyboard-interactive authentication.

Data Type

String

KeyboardInteractivePromptCount Property (IPWorksSSH_SSHServer Class)

The number of records in the KeyboardInteractivePrompt arrays.

Object Oriented Interface


public function getKeyboardInteractivePromptCount();


public function setKeyboardInteractivePromptCount($value);

Procedural Interface


ipworksssh_sshserver_get($res, 20 );


ipworksssh_sshserver_set($res, 20, $value );

Default Value

0

Remarks

This property controls the size of the following arrays:

The array indices start at 0 and end at KeyboardInteractivePromptCount - 1.

This property is not available at design time.

Data Type

Integer

KeyboardInteractivePromptEcho Property (IPWorksSSH_SSHServer Class)

Specifies if the client should echo the value entered by the user or not.

Object Oriented Interface


public function getKeyboardInteractivePromptEcho($promptindex);


public function setKeyboardInteractivePromptEcho($promptindex, $value);

Procedural Interface


ipworksssh_sshserver_get($res, 21 , $promptindex);


ipworksssh_sshserver_set($res, 21, $value , $promptindex);

Default Value

false

Remarks

Specifies if the client should echo the value entered by the user or not.

The $promptindex parameter specifies the index of the item in the array. The size of the array is controlled by the KeyboardInteractivePromptCount property.

This property is not available at design time.

Data Type

Boolean

KeyboardInteractivePromptPrompt Property (IPWorksSSH_SSHServer Class)

The prompt label/text the client should present to the user.

Object Oriented Interface


public function getKeyboardInteractivePromptPrompt($promptindex);


public function setKeyboardInteractivePromptPrompt($promptindex, $value);

Procedural Interface


ipworksssh_sshserver_get($res, 22 , $promptindex);


ipworksssh_sshserver_set($res, 22, $value , $promptindex);

Default Value

''

Remarks

The prompt label/text the client should present to the user.

The $promptindex parameter specifies the index of the item in the array. The size of the array is controlled by the KeyboardInteractivePromptCount property.

This property is not available at design time.

Data Type

String

Listening Property (IPWorksSSH_SSHServer Class)

If set to True, the class accepts incoming connections on LocalPort.

Object Oriented Interface


public function getListening();


public function setListening($value);

Procedural Interface


ipworksssh_sshserver_get($res, 23 );


ipworksssh_sshserver_set($res, 23, $value );

Default Value

false

Remarks

This property indicates whether the class is listening for connections on the port specified by the LocalPort property.

Note: Use the StartListening and StopListening methods to control whether the class is listening.

This property is not available at design time.

Data Type

Boolean

LocalHost Property (IPWorksSSH_SSHServer Class)

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Object Oriented Interface


public function getLocalHost();


public function setLocalHost($value);

Procedural Interface


ipworksssh_sshserver_get($res, 24 );


ipworksssh_sshserver_set($res, 24, $value );

Default Value

''

Remarks

The LocalHost property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface.

If the class is connected, the LocalHost property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multi-homed hosts (machines with more than one IP interface).

NOTE: LocalHost is not persistent. You must always set it in code, and never in the property window.

Data Type

String

LocalPort Property (IPWorksSSH_SSHServer Class)

The TCP port in the local host where the class listens.

Object Oriented Interface


public function getLocalPort();


public function setLocalPort($value);

Procedural Interface


ipworksssh_sshserver_get($res, 25 );


ipworksssh_sshserver_set($res, 25, $value );

Default Value

22

Remarks

The LocalPort property must be set before TCPServer starts listening. If its value is 0, then the TCP/IP subsystem picks a port number at random. The port number can be found by checking the value of the LocalPort property after TCPServer is in listening mode (after successfully assigning True to the Listening property).

The service port is not shared among servers (i.e. there can be only one TCPServer 'listening' on a particular port at one time).

Data Type

Integer

SSHCertEncoded Property (IPWorksSSH_SSHServer Class)

This is the certificate (PEM/base64 encoded).

Object Oriented Interface


public function getSSHCertEncoded();


public function setSSHCertEncoded($value);

Procedural Interface


ipworksssh_sshserver_get($res, 27 );


ipworksssh_sshserver_set($res, 27, $value );

Default Value

''

Remarks

This is the certificate (PEM/base64 encoded). This property is used to assign a specific certificate. The Store and Subject properties also may be used to specify a certificate.

When Encoded is set, a search is initiated in the current Store for the private key of the certificate. If the key is found, Subject is updated to reflect the full subject of the selected certificate; otherwise, Subject is set to an empty string.

This property is not available at design time.

Data Type

Binary String

SSHCertStore Property (IPWorksSSH_SSHServer Class)

This is the name of the certificate store for the client certificate.

Object Oriented Interface


public function getSSHCertStore();


public function setSSHCertStore($value);

Procedural Interface


ipworksssh_sshserver_get($res, 43 );


ipworksssh_sshserver_set($res, 43, $value );

Default Value

'MY'

Remarks

This is the name of the certificate store for the client certificate.

The StoreType property denotes the type of the certificate store specified by Store. If the store is password protected, specify the password in StorePassword.

Store is used in conjunction with the Subject property to specify client certificates. If Store has a value, and Subject or Encoded is set, a search for a certificate is initiated. Please see the Subject property for details.

Designations of certificate stores are platform-dependent.

The following are designations of the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e. PKCS12 certificate store).

Data Type

Binary String

SSHCertStorePassword Property (IPWorksSSH_SSHServer Class)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Object Oriented Interface


public function getSSHCertStorePassword();


public function setSSHCertStorePassword($value);

Procedural Interface


ipworksssh_sshserver_get($res, 44 );


ipworksssh_sshserver_set($res, 44, $value );

Default Value

''

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Data Type

String

SSHCertStoreType Property (IPWorksSSH_SSHServer Class)

This is the type of certificate store for this certificate.

Object Oriented Interface


public function getSSHCertStoreType();


public function setSSHCertStoreType($value);

Procedural Interface


ipworksssh_sshserver_get($res, 45 );


ipworksssh_sshserver_set($res, 45, $value );

Default Value

0

Remarks

This is the type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used the class will automatically determine the type. This property can take one of the following values:

0 (cstUser - default)For Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: this store type is not available in Java.
1 (cstMachine)For Windows, this specifies that the certificate store is a machine store. Note: this store type is not available in Java.
2 (cstPFXFile)The certificate store is the name of a PFX (PKCS12) file containing certificates.
3 (cstPFXBlob)The certificate store is a string (binary or base64-encoded) representing a certificate store in PFX (PKCS12) format.
4 (cstJKSFile)The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: this store type is only available in Java.
5 (cstJKSBlob)The certificate store is a string (binary or base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: this store type is only available in Java.
6 (cstPEMKeyFile)The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)The certificate store is a string (binary or base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)The certificate store is a string (binary or base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)The certificate store is a string (binary or base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)The certificate store is the name of a PKCS7 file containing certificates.
12 (cstP7BBlob)The certificate store is a string (binary) representing a certificate store in PKCS7 format.
13 (cstSSHPublicKeyFile)The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)The certificate store is a string that contains a JWK (JSON Web Key).
20 (cstSecurityKey)The certificate is present on a physical security key accessible via a PKCS11 interface.

To use a security key the necessary data must first be collected using the CertMgr class. The ListStoreCertificates method may be called after setting CertStoreType to cstSecurityKey, CertStorePassword to the PIN, and CertStore to the full path of the PKCS11 dll. The certificate information returned in the CertList event's CertEncoded parameter may be saved for later use.

When using a certificate, pass the previously saved security key information as the Store and set StorePassword to the PIN.

Code Example: SSH Authentication with Security Key certmgr.CertStoreType = CertStoreTypes.cstSecurityKey; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstSecurityKey, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);

21 (cstBCFKSFile)The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). Note: this store type is only available in Java and .NET.
22 (cstBCFKSBlob)The certificate store is a string (binary or base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. Note: this store type is only available in Java and .NET.
99 (cstAuto)The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

Data Type

Integer

SSHCertSubject Property (IPWorksSSH_SSHServer Class)

This is the subject of the certificate used for client authentication.

Object Oriented Interface


public function getSSHCertSubject();


public function setSSHCertSubject($value);

Procedural Interface


ipworksssh_sshserver_get($res, 46 );


ipworksssh_sshserver_set($res, 46, $value );

Default Value

''

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properites are set. When this property is set, a search is performed in the current certificate store certificate with matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma separated list of distinguished name fields and values. For instance "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are displayed below.

FieldMeaning
CNCommon Name. This is commonly a host name like www.server.com.
OOrganization
OUOrganizational Unit
LLocality
SState
CCountry
EEmail Address

If a field value contains a comma it must be quoted.

Data Type

String

SSHCompressionAlgorithms Property (IPWorksSSH_SSHServer Class)

A comma-separated list containing all allowable compression algorithms.

Object Oriented Interface


public function getSSHCompressionAlgorithms();


public function setSSHCompressionAlgorithms($value);

Procedural Interface


ipworksssh_sshserver_get($res, 54 );


ipworksssh_sshserver_set($res, 54, $value );

Default Value

'none,zlib'

Remarks

During the SSH handshake, this list will be used to negotiate the compression algorithm to be used between the client and server. This list is used for both directions: client to server and server to client. When negotiating algorithms, each side sends a list of all algorithms it supports or allows. The algorithm chosen for each direction is the first algorithm to appear in the sender's list that the receiver supports, so it is important to list multiple algorithms in preferential order. If no algorithm can be agreed upon, the class will raise an error and the connection will be aborted.

At least one supported algorithm must appear in this list. The following compression algorithms are supported by the class:

  • zlib
  • zlib@openssh.com
  • none

Data Type

String

SSHEncryptionAlgorithms Property (IPWorksSSH_SSHServer Class)

A comma-separated list containing all allowable encryption algorithms.

Object Oriented Interface


public function getSSHEncryptionAlgorithms();


public function setSSHEncryptionAlgorithms($value);

Procedural Interface


ipworksssh_sshserver_get($res, 55 );


ipworksssh_sshserver_set($res, 55, $value );

Default Value

'aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc,arcfour256,arcfour128,arcfour,cast128-cbc,aes256-gcm@openssh.com,aes128-gcm@openssh.com,chacha20-poly1305@openssh.com'

Remarks

During the SSH handshake, this list will be used to negotiate the encryption algorithm to be used between the client and server. This list is used for both directions: client to server and server to client. When negotiating algorithms, each side sends a list of all algorithms it supports or allows. The algorithm chosen for each direction is the first algorithm to appear in the sender's list that the receiver supports, so it is important to list multiple algorithms in preferential order. If no algorithm can be agreed upon, the class will raise an error and the connection will be aborted.

At least one supported algorithm must appear in this list. The following encryption algorithms are supported by the class:

aes256-ctr256-bit AES encryption in CTR mode
aes256-cbc256-bit AES encryption in CBC mode
aes192-ctr192-bit AES encryption in CTR mode
aes192-cbc192-bit AES encryption in CBC mode
aes128-ctr128-bit AES encryption in CTR mode
aes128-cbc128-bit AES encryption in CBC mode
3des-ctr192-bit (3-key) triple DES encryption in CTR mode
3des-cbc192-bit (3-key) triple DES encryption in CBC mode
cast128-cbcCAST-128 encryption
blowfish-cbcBlowfish encryption
arcfourARC4 encryption
arcfour128128-bit ARC4 encryption
arcfour256256-bit ARC4 encryption
aes256-gcm@openssh.com256-bit AES encryption in GCM mode.
aes128-gcm@openssh.com128-bit AES encryption in GCM mode.
chacha20-poly1305@openssh.comChaCha20 with Poly1305-AES encryption.

Data Type

String

ChangeRecordLength Method (IPWorksSSH_SSHServer Class)

Changes the length of received data records.

Object Oriented Interface

public function doChangeRecordLength($channelid, $recordlength);

Procedural Interface

ipworksssh_sshserver_do_changerecordlength($res, $channelid, $recordlength);

Remarks

This method defines the length of data records to be received (in bytes) for the specified ChannelId.

If RecordLength is set to a positive value, the class will accumulate data until RecordLength bytes of data is received and only then fire the SSHChannelDataIn event with data of length RecordLength. This allows data to be received as records of known length. This method can be called at any time to change the record length, including within the DataIn event.

A value of 0 (default) means this functionality is not used.

CloseChannel Method (IPWorksSSH_SSHServer Class)

Closes a existing SSHChannel .

Object Oriented Interface

public function doCloseChannel($channelid);

Procedural Interface

ipworksssh_sshserver_do_closechannel($res, $channelid);

Remarks

ChannelId is the identifier for the SSH channel to be closed.

Config Method (IPWorksSSH_SSHServer Class)

Sets or retrieves a configuration setting.

Object Oriented Interface

public function doConfig($configurationstring);

Procedural Interface

ipworksssh_sshserver_do_config($res, $configurationstring);

Remarks

Config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Disconnect Method (IPWorksSSH_SSHServer Class)

This method disconnects the specified client.

Object Oriented Interface

public function doDisconnect($connectionid);

Procedural Interface

ipworksssh_sshserver_do_disconnect($res, $connectionid);

Remarks

Calling this method will disconnect the client specified by the ConnectionId parameter.

DoEvents Method (IPWorksSSH_SSHServer Class)

Processes events from the internal message queue.

Object Oriented Interface

public function doEvents();

Procedural Interface

ipworksssh_sshserver_do_doevents($res);

Remarks

When DoEvents is called, the class processes any available events. If no events are available, it waits for a preset period of time, and then returns.

ExchangeKeys Method (IPWorksSSH_SSHServer Class)

Causes the class to exchange a new set of session keys on the specified connection.

Object Oriented Interface

public function doExchangeKeys($connectionid);

Procedural Interface

ipworksssh_sshserver_do_exchangekeys($res, $connectionid);

Remarks

SSH key renegotiation can be initiated by either end of an established SSH connection. ExchangeKeys allows the server to start such a renegotiation with the client. During this process, SSHStatus events will fire containing updates regarding the key negotiation process.

The SSH 2.0 specification recommends that key renegotiation be done once for 2 gigabytes (GB) of data processed by the connection, or once every day. This makes it more difficult to break the security of data-intensive or long-lived connections.

GetSSHParam Method (IPWorksSSH_SSHServer Class)

Used to read a field from an SSH packet's payload.

Object Oriented Interface

public function doGetSSHParam($payload, $field);

Procedural Interface

ipworksssh_sshserver_do_getsshparam($res, $payload, $field);

Remarks

This method is used to read the value of a particular field from an SSH packet's payload. Payload should contain the full payload of a packet received by an event such as SSHChannelRequest. Field is the name of a field to be read out of the packet.

The following is a list of the names of well-known channel request field names and their encodings:

ChannelId (int32)The id of the channel that received the packet.
RequestType (string)The type of channel request.
WantsReply (boolean)Whether or not the client wants a reply to the request.

The remaining fields that are available in the payload are dependent upon the value of RequestType.

pty-req

Pty-req is a request to open a pseudo terminal on the specified channel. The following fields are available:

TerminalType (string)The type of terminal being requested (eg: "vt100").
TerminalWidthCharacters (int32)The width, in characters, of the terminal to be opened.
TerminalHeightRows (int32)The height, in rows, of the terminal to be opened.
TerminalWidthPixels (int32)The width, in pixels, of the terminal to be opened.
TerminalHeightPixels (int32)The height, in pixels, of the terminal to be opened.
TerminalModes (string)A list of op-val (int32-byte) encoded modes to be used by the terminal.

x11-req

X11-req is a request to forward x11 sessions over a channel. The following fields are available:

SingleConnection (boolean)Disallows more than one connection to be forwarded by the channel.
X11AuthProtocol (string)The authentication protocol to be used (eg: "MIT-MAGIC-COOKIE-1").
X11AuthCookie (string)A hexadecimal-encoded cookie to be used for authentication.
X11ScreenNumber (int32)The x11 screen number to be used.

env

Env is a request to set an environment variable to be passed into a shell that may be started later. The following fields are available:

VariableName (string)The name of the variable to be set.
VariableValue (string)The value of the variable to be set.

exec

Exec is a request to execute a command on the channel using the authenticated user's shell. The following field is available:

Command (string)The command to be executed.

subsystem

Subsystem is a request to start a subsystem on the specified channel. The following field is available:

Subsystem (string)The name of the subsystem to be started (eg: "sftp").

xon-xoff

Instructs the server to allow or disallow control-S/control-Q style flow control. The following field is available:

ClientCanDo (boolean)Whether or not the server should enable flow control.

signal

Sends a signal to the remote process/service. The following field is available:

SignalName (string)The name of the signal to be sent.

If the packet type is not well known, Field should start with the special character "%" and contain a comma-separated list of field types as defined in SetSSHParam. For example, reading out the X11AuthProtocol of an x11-req payload, you can use "%s,f".

Note: the return value is a string encoded the same way as the FieldValue param in SetSSHParam.

GetSSHParamBytes Method (IPWorksSSH_SSHServer Class)

Used to read a field from an SSH packet's payload.

Object Oriented Interface

public function doGetSSHParamBytes($payload, $field);

Procedural Interface

ipworksssh_sshserver_do_getsshparambytes($res, $payload, $field);

Remarks

This method is the same as calling GetSSHParam, but returns raw bytes instead of strings.

OpenChannel Method (IPWorksSSH_SSHServer Class)

Opens a new SSHChannel .

Object Oriented Interface

public function doOpenChannel($connectionid, $channeltype);

Procedural Interface

ipworksssh_sshserver_do_openchannel($res, $connectionid, $channeltype);

Remarks

The SSH 2.0 specification allows for multiple channels to be opened over a single TCP/IP connection. The Channels property represents the channels that are currently open. A new SSHChannel can be opened with OpenChannel.

ChannelType represents the type of SSH channel to be opened. The most common type of channel is "session".

If the call to OpenChannel succeeds, an SSHChannel will be created and added to the Channels collection.

Reset Method (IPWorksSSH_SSHServer Class)

Reset the class.

Object Oriented Interface

public function doReset();

Procedural Interface

ipworksssh_sshserver_do_reset($res);

Remarks

This method will reset the class's properties to their default values.

SendBytes Method (IPWorksSSH_SSHServer Class)

Sends binary data to the specified channel.

Object Oriented Interface

public function doSendBytes($channelid, $data);

Procedural Interface

ipworksssh_sshserver_do_sendbytes($res, $channelid, $data);

Remarks

This method sends binary data to the channel identified by ChannelId. To send text use the SendText method instead.

SendChannelData Method (IPWorksSSH_SSHServer Class)

Used to send data over an SSH channel.

Object Oriented Interface

public function doSendChannelData($channelid, $data);

Procedural Interface

ipworksssh_sshserver_do_sendchanneldata($res, $channelid, $data);

Remarks

This method can be used to send arbitrary data to the channel with the specified ChannelId.

SendSSHPacket Method (IPWorksSSH_SSHServer Class)

Used to send an encoded SSH packet to the server.

Object Oriented Interface

public function doSendSSHPacket($channelid, $packettype, $payload);

Procedural Interface

ipworksssh_sshserver_do_sendsshpacket($res, $channelid, $packettype, $payload);

Remarks

This method can be used to send a previously built SSH payload to the server. ChannelId identifies the channel that will receive the packet.

PacketType identifies what kind of packet is to be sent. Payload should contain the payload of the packet, which can be built by successive calls to SetSSHParam.

When SendSSHPacket is called, the class will finish building the packet, encrypt it for transport, and send it to the server.

SendText Method (IPWorksSSH_SSHServer Class)

Sends text to the specified channel.

Object Oriented Interface

public function doSendText($channelid, $text);

Procedural Interface

ipworksssh_sshserver_do_sendtext($res, $channelid, $text);

Remarks

This method sends text to the client identified by ChannelId. To send binary data use the SendBytes method instead.

SetSSHParam Method (IPWorksSSH_SSHServer Class)

Used to write a field to the end of a payload.

Object Oriented Interface

public function doSetSSHParam($payload, $fieldtype, $fieldvalue);

Procedural Interface

ipworksssh_sshserver_do_setsshparam($res, $payload, $fieldtype, $fieldvalue);

Remarks

This method is used to build the payload portion of an SSH packet to be sent later by a call to SendSSHPacket. Payload should contain the result of a previous call to SetSSHParam. FieldType is a string defining the type of field to be written to the packet. FieldValue should be the string representation of the field to be written.

The following is a list of supported field types and a description of how FieldValue should be encoded:

sA plaintext string containing the default system encoding of the data.
sbA string containing the hex encoded data. (eg: "A1B23C")
mA variable-length large integer, encoded as a textual representation of the value ("1234").
iA 32-bit integer, encoded as a textual representation of the value (eg: "1234").
lA 64-bit integer, encoded as a textual representation of the value (eg: "1234").
bA single byte, encoded as a textual representation of the value (eg: "123").
fA boolean flag, encoded as a textual representation of the value (eg: 'true' or 'false')

Note: integer values may be encoded in hexadecimal by prefixing "0x" to the beginning of the string, otherwise the value is assumed to be base-10.

Shutdown Method (IPWorksSSH_SSHServer Class)

This method shuts down the server.

Object Oriented Interface

public function doShutdown();

Procedural Interface

ipworksssh_sshserver_do_shutdown($res);

Remarks

This method shuts down the server. Calling this method is equivalent to calling StopListening and then breaking every client connection by calling Disconnect.

StartListening Method (IPWorksSSH_SSHServer Class)

This method starts listening for incoming connections.

Object Oriented Interface

public function doStartListening();

Procedural Interface

ipworksssh_sshserver_do_startlistening($res);

Remarks

This method begins listening for incoming connections on the port specified by LocalPort. Once listening, events will fire as new clients connect and data are transferred.

To stop listening for new connections, call StopListening. To stop listening for new connections and to disconnect all existing clients, call Shutdown.

StopListening Method (IPWorksSSH_SSHServer Class)

This method stops listening for new connections.

Object Oriented Interface

public function doStopListening();

Procedural Interface

ipworksssh_sshserver_do_stoplistening($res);

Remarks

This method stops listening for new connections. After being called, any new connection attempts will be rejected. Calling this method does not disconnect existing connections.

To stop listening and to disconnect all existing clients, call Shutdown instead.

Connected Event (IPWorksSSH_SSHServer Class)

This event is fired immediately after a connection completes (or fails).

Object Oriented Interface

public function fireConnected($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 1, array($this, 'fireConnected'));

Parameter List

 'connectionid'
'statuscode'
'description'
'certstoretype'
'certstore'
'certpassword'
'certsubject'

Remarks

If the connection is made normally, StatusCode is 0, and Description is "OK".

If the connection fails, StatusCode has the error code returned by the system. Description contains a description of this code. The value of StatusCode is equal to the value of the system error.

Please refer to the Error Codes section for more information.

ConnectionId is the connection Id of the client requesting the connection.

CertStoreType is the store type of the alternate certificate to use for this connection. The class supports both public and private keys in a variety of formats. When the cstAuto value is used the class will automatically determine the type. This property can take one of the following values:

0 (cstUser - default)For Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: this store type is not available in Java.
1 (cstMachine)For Windows, this specifies that the certificate store is a machine store. Note: this store type is not available in Java.
2 (cstPFXFile)The certificate store is the name of a PFX (PKCS12) file containing certificates.
3 (cstPFXBlob)The certificate store is a string (binary or base64-encoded) representing a certificate store in PFX (PKCS12) format.
4 (cstJKSFile)The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: this store type is only available in Java.
5 (cstJKSBlob)The certificate store is a string (binary or base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: this store type is only available in Java.
6 (cstPEMKeyFile)The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)The certificate store is a string (binary or base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)The certificate store is a string (binary or base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)The certificate store is a string (binary or base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)The certificate store is the name of a PKCS7 file containing certificates.
12 (cstP7BBlob)The certificate store is a string (binary) representing a certificate store in PKCS7 format.
13 (cstSSHPublicKeyFile)The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)The certificate store is a string that contains a JWK (JSON Web Key).
20 (cstSecurityKey)The certificate is present on a physical security key accessible via a PKCS11 interface.

To use a security key the necessary data must first be collected using the CertMgr class. The ListStoreCertificates method may be called after setting CertStoreType to cstSecurityKey, CertStorePassword to the PIN, and CertStore to the full path of the PKCS11 dll. The certificate information returned in the CertList event's CertEncoded parameter may be saved for later use.

When using a certificate, pass the previously saved security key information as the and set to the PIN.

Code Example: SSH Authentication with Security Key certmgr.CertStoreType = CertStoreTypes.cstSecurityKey; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstSecurityKey, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);

21 (cstBCFKSFile)The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). Note: this store type is only available in Java and .NET.
22 (cstBCFKSBlob)The certificate store is a string (binary or base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. Note: this store type is only available in Java and .NET.
99 (cstAuto)The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

CertStore is the store name or location of the alternate certificate to use for this connection.

Designations of certificate stores are platform-dependent.

The following are designations of the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e. PKCS12 certificate store).

CertPassword is the password of the certificate store containing the alternate certificate to use for this connection.

CertSubject is the subject of the alternate certificate to use for this connection.

The special value * matches any subject and will select the first certificate in the store. The certificate subject is a comma separated list of distinguished name fields and values. For instance "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are displayed below.

FieldMeaning
CNCommon Name. This is commonly a host name like www.server.com.
OOrganization
OUOrganizational Unit
LLocality
SState
CCountry
EEmail Address

If a field value contains a comma it must be quoted.

ConnectionRequest Event (IPWorksSSH_SSHServer Class)

This event is fired when a request for connection comes from a remote host.

Object Oriented Interface

public function fireConnectionRequest($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 2, array($this, 'fireConnectionRequest'));

Parameter List

 'address'
'port'
'accept'

Remarks

This event indicates an incoming connection. The connection is accepted by default. Address and Port will contain information about the remote host requesting the inbound connection. If you want to refuse it, you can set the Accept parameter to False.

Disconnected Event (IPWorksSSH_SSHServer Class)

This event is fired when a connection is closed.

Object Oriented Interface

public function fireDisconnected($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 3, array($this, 'fireDisconnected'));

Parameter List

 'connectionid'
'statuscode'
'description'

Remarks

If the connection is broken normally, StatusCode is 0, and Description is "OK".

If the connection is broken for any other reason, StatusCode has the error code returned by the system. Description contains a description of this code. The value of StatusCode is equal to the value of the system error.

Please refer to the Error Codes section for more information.

Error Event (IPWorksSSH_SSHServer Class)

Information about errors during data delivery.

Object Oriented Interface

public function fireError($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 4, array($this, 'fireError'));

Parameter List

 'connectionid'
'errorcode'
'description'

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

ConnectionId contains an error code and Description contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

ErrorCode contains an error code and Description contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

Log Event (IPWorksSSH_SSHServer Class)

Fires once for each log message.

Object Oriented Interface

public function fireLog($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 5, array($this, 'fireLog'));

Parameter List

 'connectionid'
'loglevel'
'message'
'logtype'

Remarks

This event fires once for each log messages generated by the class. The verbosity is controlled by the LogLevel setting.

LogLevel indicates the detail level of the message. Possible values are:

0 (None) No messages are logged.
1 (Info - Default) Informational events such as SSH handshake messages are logged.
2 (Verbose) Detailed data such as individual packet information is logged.
3 (Debug) Debug data including all relevant sent and received bytes are logged.

Message is the log message.

LogType is reserved for future use.

ConnectionId specifies the connection to which the log message is applicable.

SSHChannelClosed Event (IPWorksSSH_SSHServer Class)

Fired when a channel is closed.

Object Oriented Interface

public function fireSSHChannelClosed($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 6, array($this, 'fireSSHChannelClosed'));

Parameter List

 'connectionid'
'channelid'

Remarks

The SSHChannelClosed event is fired when a channel is closed on an SSH connection.

ConnectionId identifies the connection. ChannelId identifies the channel.

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHChannelDataIn Event (IPWorksSSH_SSHServer Class)

Fired when data is received on an SSH channel.

Object Oriented Interface

public function fireSSHChannelDataIn($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 7, array($this, 'fireSSHChannelDataIn'));

Parameter List

 'connectionid'
'channelid'
'data'

Remarks

Whenever a client sends data to an SSH channel, the SSHChannelDataIn event will fire. ChannelId will identify the channel receiving data. Data will contain the raw data being received.

ConnectionId identifies the connection. ChannelId identifies the channel.

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHChannelEOF Event (IPWorksSSH_SSHServer Class)

Fired when the remote peer signals the end of the data stream for the channel.

Object Oriented Interface

public function fireSSHChannelEOF($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 8, array($this, 'fireSSHChannelEOF'));

Parameter List

 'connectionid'
'channelid'

Remarks

The SSHChannelEOF event is fired when the end of the data stream for a channel on an SSH connection is reached.

ConnectionId identifies the connection. ChannelId identifies the channel.

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHChannelOpened Event (IPWorksSSH_SSHServer Class)

Fired when a channel is successfully opened.

Object Oriented Interface

public function fireSSHChannelOpened($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 9, array($this, 'fireSSHChannelOpened'));

Parameter List

 'connectionid'
'channelid'

Remarks

The SSHChannelOpened event is fired when a channel is successfully opened on an SSH connection.

ConnectionId identifies the connection. ChannelId identifies the channel.

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHChannelOpenRequest Event (IPWorksSSH_SSHServer Class)

Fired when a client attempts to open a new channel.

Object Oriented Interface

public function fireSSHChannelOpenRequest($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 10, array($this, 'fireSSHChannelOpenRequest'));

Parameter List

 'connectionid'
'channelid'
'service'
'parameters'
'accept'

Remarks

This event is fired whenever a client attempts to open a new channel for a given connection. ChannelId will contain the id of the channel to be created. Service will identify the type of channel that is being requested (e.g.: "session"). Set Accept to true to accept the channel open request.

ConnectionId identifies the connection. ChannelId identifies the channel.

If the channel open request contains extra information, it will be contained in Parameters; you can extract data from it using GetSSHParam and GetSSHParamBytes. The most common example of a request with parameters would be a request with Service set to "direct-tcpip" (for SSH tunneling); in that case Parameters will contain the host to connect (string), the port to connect (int), the originator IP address (string) and the originator TCP port (int).

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHChannelReadyToSend Event (IPWorksSSH_SSHServer Class)

Fired when the class is ready to send data.

Object Oriented Interface

public function fireSSHChannelReadyToSend($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 11, array($this, 'fireSSHChannelReadyToSend'));

Parameter List

 'connectionid'
'channelid'

Remarks

This event fires when data can be sent over the SSH Channel specified by ChannelId for the connection specified by ConnectionId.

When a channel is opened this event will fire once the channel is ready and data can be sent.

When Timeout is set to 0 (asynchronous) sending data may result in an error if the channel or underlying socket cannot accept more data to send. Monitor SSHChannelReadyToSend or ReadyToSend to determine when data can be sent again.

When Timeout is set to a positive value the class will block when sending data until the data can be successfully sent and SSHChannelReadyToSend and ReadyToSend do not need to be monitored.

SSHChannelRequest Event (IPWorksSSH_SSHServer Class)

Fired when the SSHHost sends a channel request to the client.

Object Oriented Interface

public function fireSSHChannelRequest($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 12, array($this, 'fireSSHChannelRequest'));

Parameter List

 'connectionid'
'channelid'
'requesttype'
'packet'
'success'

Remarks

The SSHHost may send requests that affect the status of a particular SSHChannel. Some requests will be automatically handled by the class. However, others may need the attention of the user to be dealt with properly within the scope of the application.

ConnectionId identifies the connection.

ChannelId identifies the channel receiving the request.

Type will contain the type of the request. These types are dependent upon the type of the channel. For example, a "session" channel executing a command on the remote shell may receive an "exit-status" request containing the return code of that command.

RequestData contains the remainder of the original SSH packet. If the request type has specific parameters, they can be parsed out of this data.

Success should be used to instruct the class to respond to the request with either a success or failure notification. If the request is successful, SSHChannelRequested will fire with the same information in case the request requires further processing.

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHChannelRequested Event (IPWorksSSH_SSHServer Class)

Fired if the SSHChannelRequest was successful, any further processing for the channel request should be done here.

Object Oriented Interface

public function fireSSHChannelRequested($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 13, array($this, 'fireSSHChannelRequested'));

Parameter List

 'connectionid'
'channelid'
'requesttype'
'packet'

Remarks

The SSHHost may send requests that affect the status of a particular SSHChannel. Some requests will be automatically handled by the class. However, others may need the attention of the user to be dealt with properly within the scope of the application.

ConnectionId identifies the connection.

ChannelId identifies the channel receiving the request.

Type will contain the type of the request. These types are dependent upon the type of the channel. For example, a "session" channel executing a command on the remote shell may receive an "exit-status" request containing the return code of that command.

RequestData contains the remainder of the original SSH packet. If the request type has specific parameters, they can be parsed out of this data.

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHServiceRequest Event (IPWorksSSH_SSHServer Class)

Fired when a client requests a service to be started.

Object Oriented Interface

public function fireSSHServiceRequest($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 14, array($this, 'fireSSHServiceRequest'));

Parameter List

 'connectionid'
'service'
'accept'

Remarks

The SSHServiceRequest event is fired when a client requests that a service be started for a particular connection, identified by ConnectionId. Service will be the name of the service the client wishes to start. If the connection is authenticated and the user has access to the service, set Accept to true to allow the SSHServer to accept the request.

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

SSHStatus Event (IPWorksSSH_SSHServer Class)

Shows the progress of the secure connection.

Object Oriented Interface

public function fireSSHStatus($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 15, array($this, 'fireSSHStatus'));

Parameter List

 'connectionid'
'message'

Remarks

The event is fired for informational and logging purposes only. Used to track the progress of the connection.

SSHTunnelClosed Event (IPWorksSSH_SSHServer Class)

This event will fire when a connected client attempts to close a tunnel.

Object Oriented Interface

public function fireSSHTunnelClosed($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 16, array($this, 'fireSSHTunnelClosed'));

Parameter List

 'connectionid'
'address'
'port'

Remarks

This event fires when the connected client attempts to close a forward or reverse tunnel.

SSHTunnelRequested Event (IPWorksSSH_SSHServer Class)

This event fires when a connected client attempts to establish a forward or reverse tunnel.

Object Oriented Interface

public function fireSSHTunnelRequested($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 17, array($this, 'fireSSHTunnelRequested'));

Parameter List

 'connectionid'
'direction'
'address'
'port'
'accept'

Remarks

This event fires when the connected client attempts to establish a forward or reverse tunnel. A forward tunnel, after being established, will forward all traffic from the client to a specified hostname and port. A reverse tunnel, after being established, will listen for incoming traffic on the same machine where SSHServer is running and any data received on that port will be forwarded to the client who requested the reverse tunnel.

SSHUserAuthRequest Event (IPWorksSSH_SSHServer Class)

Fires when a client attempts to authenticate a connection.

Object Oriented Interface

public function fireSSHUserAuthRequest($param);

Procedural Interface

ipworksssh_sshserver_register_callback($res, 18, array($this, 'fireSSHUserAuthRequest'));

Parameter List

 'connectionid'
'user'
'service'
'authmethod'
'authparam'
'accept'
'partialsuccess'
'availablemethods'
'keyalgorithm'

Remarks

The SSHUserAuthRequest event fires when an SSH client attempts to authenticate itself on a particular connection. ConnectionId will identify the connection being authenticated. User will be the name of the account requesting authentication, and Service will contain the name of the service the client is wishing to access.

AuthMethod will denote which method the client is attempting to use to authenticate itself. AuthParam will contain the value of the authentication token used by the client. If the token is acceptable, you may set Accept to true to allow the class to authenticate the client. If it is not, set Accept to false.

Connecting clients will initially attempt authentication with an AuthMethod of "none". This is done with the expectation that the request will fail and the server will send a list of supported methods back to the client. In your implementation check the AuthMethod parameter, if it is "none" you should set AvailableMethods and reject the request. The client will select one of the available methods and re-authenticate.

You may set AvailableMethods to a comma-delimited string of authentication methods that are available for the user. This list will be sent back to the client so that it may perform further authentication attempts.

The following is a list of methods implemented by the class:

noneThis authentication method is used by most SSH clients to obtain the list of authentication methods available for the user's account. In most cases you should not accept a request using this authentication method.
passwordAuthParam will contain the user-supplied password. If the password is correct, set Accept to true.
publickeyAuthParam will contain an SSH2 public key blob. If the user's public key is acceptable, set Accept to true. The class will then handle verifying the digital signature and will respond to the client accordingly.
keyboard-interactiveSSHUserAuthRequest will fire multiple times for keyboard-interactive authentication: It will fire once for each response sent by the client in the SSH_MSG_USERAUTH_INFO_RESPONSE packet (one for each prompt specified by the daemon). The index of each response will be specified as a suffix in AuthMethod, with AuthParam containing the response to the corresponding prompt (e.g keyboard-interactive-1, keyboard-interactive-2 and so on). Finally, SSHUserAuthRequest will fire one last time with AuthMethod set to "keyboard-interactive" and AuthParam set to an empty string. The daemon must set Accept to true every time to allow the authentication process to succeed.

The PartialSuccess parameter is only used when multi-factor authentication is needed. To implement multi-factor authentication when this event fires first verify the AuthParam for the given AuthMethod. If accepted, set PartialSuccess to true and Accept to false. The client should then send the authentication request for a different form of authentication specified in AvailableMethods. You may continue to set PartialSuccess to true until all authentication requirements are satisfied. Once all requirements are satisfied set Accept to true.

KeyAlgorithm hold the signing algorithm used when the client attempts public key authentication. Possible values are:

  • ssh-rsa
  • rsa-sha2-256
  • rsa-sha2-512
  • ssh-dss
  • ecdsa-sha2-nistp256
  • ecdsa-sha2-nistp384
  • ecdsa-sha2-nistp521
  • x509v3-sign-rsa
  • x509v3-sign-dss

Note: Processing long-running requests, including sending channel data, inside this event may cause the underlying transport to stop processing SSH data until the event returns. In order to prevent this from happening, all requests should be processed asynchronously in a separate thread outside of this event.

Config Settings (SSHServer Class)

The class accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

SSHServer Config Settings

AltSSHCertCount:   The number of records in the AltSSHCert configuration settings.

This configuration setting controls the size of the following arrays:

The array indices start at 0 and end at AltSSHCertCount - 1.

The AltSSHCert configuration settings are used to specify alternative digital certificates to the one set using the SSHCert. The server will determine the certificate to use during SSH negotiation based on the public key algorithm requested by the connecting client. A certificate with a private key is required for session authentication and encryption.

These are the server's certificates, and must be set prior to setting Listening to True.

AltSSHCertStore[i]:   The name of the certificate store.

The name of the certificate store. This is used when specifying an alternative SSHCert.

The AltSSHCertStoreType specifies the type of the certificate store specified by AltSSHCertStore. IF the store is password protected, specify the password in the AltSSHCertStorePassword.

AltSSHCertStore is used in conjunction with the AltSSHCertSubject field in order to specify the certificate.

Designations of certificate stores are platform-dependent.

The following are designations of the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e. PKCS12 certificate store).

AltSSHCertStorePassword[i]:   The password used to open the certificate store.

If the certificate store is of a type that requires a password, this setting can be used to specify that password. This is used when specifying an alternative SSHCert

AltSSHCertStoreType[i]:   The type of certificate store.

This specifies the type of certificate store. This is used when specifying an alternate SSHCert. Possible values are:

0 User - This is the default for Windows. This specifies that the certificate store is a certificate store owned by the current user. Note: This store type is not available in Java.
1 Machine - For Windows, this specifies that the certificate store is a machine store. Note: This store type is not available in Java.
2 PFXFile - The certificate store is the name of a PFX (PKCS12) file containing certificates.
3 PFXBlob - The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS12) format.
4 JKSFile - The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: This store type is available only in Java.
5 JKSBlob - The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: This store type is available only in Java.
6 PEMKeyFile - The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 PEMKeyBlob - The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
14 PPKFile - The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 PPKBlob - The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 XMLFile - The certificate store is the name of a file that contains a certificate in XML format.
17 XMLBlob - The certificate store is a string that contains a certificate in XML format.

AltSSHCertSubject[i]:   The alternative certificate subject.

The subject of the certificate. This is used when specifying an alternative SSHCert.

KeyboardInteractivePrompts[ConnectionId]:   Specifies custom keyboard-interactive prompts for particular connections.

By default, setting the KeyboardInteractivePrompts property will cause those prompts to be used for every user attempting to connect. This setting can be used to override the KeyboardInteractivePrompts property and provide unique prompts for certain connections.

This setting takes a list of prompts to display to the client, and each prompt includes an 'echo' parameter to specify whether or not to echo the client's response to the prompt. The prompt itself and the echo parameter should be separated by a comma (","), and each prompt should be separated by a semi-colon (";"). For example:

"KeyboardInteractivePrompts[connId]=First prompt,echo=false;Second prompt,echo=true"

This config can be set anywhere in code, but it is necessary to know the ConnectionId for the specific connection beforehand; as such, it is generally recommended to set this config inside the SSHUserAuthRequest event. Since connecting clients initially attempt to connect with and AuthMethod of 'none' (with the understanding that this attempt will fail, and the SSH server will advertise which authentication methods it supports), It is recommended to check the AuthMethod, User, and ConnectionId parameters of the SSHUserAuthRequest event and set this config accordingly.

When SSHServer displays keyboard-interactive prompts, it will first check to see if this config is populated for the current ConnectionId. If it is, the prompts set here will be used instead of those set in the KeyboardInteractivePrompts property. Otherwise, the KeyboardInteractivePrompts property will function as normal.

KeyRenegotiationThreshold:   Sets the threshold for the SSH Key Renegotiation.

This property allows you to specify the threshold, in the number of bytes, for the SSH Key Renegotiation. The default value for this property is set to 1 GB.

Example (for setting the threshold to 500 MB): SSHComponent.Config("KeyRenegotiationThreshold=524288000")

LogLevel:   Specifies the level of detail that is logged.

This setting controls the level of detail that is logged through the Log event. Possible values are:

0 (None) No messages are logged.
1 (Info - Default) Informational events such as SSH handshake messages are logged.
2 (Verbose) Detailed data such as individual packet information is logged.
3 (Debug) Debug data including all relevant sent and received bytes are logged.

MaxAuthAttempts:   The maximum authentication attempts allowed before forcing a disconnect.

This setting specifies the maximum amount of authentication attempts that will be allowed before forcibly disconnecting the client.

ServerSSHVersionString:   The SSH version string sent to connecting clients.

This setting specifies the version string value that is sent to all connecting clients. This may be set to specify server specific information. The default value is "SSH-2.0-IPWorks SSH Daemon 2016". When setting your own value it must begin with "SSH-2.0-" as this is a standard format that specifies the supported SSH version.

SSHKeepAliveCountMax:   The maximum number of keep alive packets to send without a response.

This setting specifies the maximum number of keep alive packets to send when no response is received. Normally a response to a keep alive packet is received right away. If no response is received the class will continue to send keep alive packets until SSHKeepAliveCountMax is reached. If this is reached the class will assume the connection is broken and disconnect. The default value is 5.

SSHKeepAliveInterval:   The interval between keep alive packets.

This setting specifies the number of seconds between keep alive packets. If set to a positive value the class will send a SSH keep alive packet after KeepAliveInterval seconds of inactivity. This setting only takes effect when there is no activity, if any data is sent or received over the connection it will reset the timer.

The default value is 0 meaning no keep alives will be sent.

Note: The SSHReverseTunnel class uses a default value of 30.

SSHKeyExchangeAlgorithms:   Specifies the supported key exchange algorithms.

This may be used to specify the list of supported Key Exchange algorithms used during SSH negotiation. The value should contain a comma separated list of algorithms. Supported algorithms are:

  • curve25519-sha256
  • curve25519-sha256@libssh.org
  • diffie-hellman-group1-sha1
  • diffie-hellman-group14-sha1
  • diffie-hellman-group14-sha256
  • diffie-hellman-group16-sha512
  • diffie-hellman-group18-sha512
  • diffie-hellman-group-exchange-sha256
  • diffie-hellman-group-exchange-sha1
  • ecdh-sha2-nistp256
  • ecdh-sha2-nistp384
  • ecdh-sha2-nistp521
The default value is: curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1.
SSHMacAlgorithms:   Specifies the supported Mac algorithms.

This may be used to specify an alternate list of supported Mac algorithms used during SSH negotiation. This also specifies the order in which the Mac algorithms are preferred. The value should contain a comma separated list of algorithms. Supported algorithms are:

  • hmac-sha1
  • hmac-md5
  • hmac-sha1-96
  • hmac-md5-96
  • hmac-sha2-256
  • hmac-sha2-256-96
  • hmac-sha2-512
  • hmac-sha2-512-96
  • hmac-ripemd160
  • hmac-ripemd160-96
  • hmac-sha2-256-etm@openssh.com
  • hmac-sha2-512-etm@openssh.com
The default value is hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-md5,hmac-ripemd160,hmac-sha1-96,hmac-md5-96,hmac-sha2-256-96,hmac-sha2-512-96,hmac-ripemd160-96,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com.
SSHPubKeyAuthSigAlgorithms:   Specifies the allowed signature algorithms used by a client performing public key authentication.

This setting specifies a list of signature algorithms that a client is allowed to use when authenticating to the server using public key authentication. This applies only when public key authentication is performed by the client.

The setting should be a comma separated list of algorithms. When a client connects the server will verify that the client performing public key authentication has used one of the specified signature algorithms. If the client uses a signature algorithm which is not in the list the connection will be rejected.

Possible values are:

  • ssh-rsa
  • rsa-sha2-256
  • rsa-sha2-512
  • ssh-dss
  • ecdsa-sha2-nistp256
  • ecdsa-sha2-nistp384
  • ecdsa-sha2-nistp521
  • ssh-ed25519
  • x509v3-sign-rsa
  • x509v3-sign-dss

The default value in Windows is ssh-rsa,rsa-sha2-256,rsa-sha2-512,x509v3-sign-rsa,ssh-dss,x509v3-sign-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519.

SSHPublicKeyAlgorithms:   Specifies the supported public key algorithms for the server's public key.

This setting specifies the allowed public key algorithms for the server's public key. This list controls only the public key algorithm used when authenticating the server's public key. This list has no bearing on the public key algorithms that can be used by the client when performing public key authentication to the server. The default value is ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-256,rsa-sha2-512,ssh-rsa,ssh-dss,x509v3-sign-rsa,x509v3-sign-dss.

SSHVersionPattern:   The pattern used to match the remote host's version string.

This configuration setting specifies the pattern used to accept or deny the remote host's SSH version string. It takes a comma-delimited list of patterns to match. The default value is "*SSH-1.99-*,*SSH-2.0-*" and will accept connections from SSH 1.99 and 2.0 hosts. As an example, the below value would accept connections for SSH 1.99, 2.0, and 2.99 hosts.

*SSH-1.99-*,*SSH-2.0-*,*SSH-2.99-*
UserAuthBanner[ConnectionId]:   A custom user authentication banner.

This setting specifies a custom user authentication banner, which may be sent to give the client more information regarding an authentication attempt. "connectionId" specifies the particular connection to send the message to. This configuration option is only effective when set within the SSHUserAuthRequest event.

TCPServer Config Settings

AllowedClients:   A comma-separated list of host names or IP addresses that can access the class.

This configuration setting defines a comma-separated list of host names or IPv4 addresses that may access the class. The wildcard character "*" is supported. The default value is "*" and all connections are accepted.

When a client connects, the client's address is checked against the list defined here. If there is no match, the ConnectionRequest event fires with an Accept value set to False. If no action is taken within the ConnectionRequest event, the client will be disconnected.

BindExclusively:   Whether or not the component considers a local port reserved for exclusive use.

If this is True (default), the component will bind to the local port with the ExclusiveAddressUse option set, meaning that nothing else can bind to the same port. Also the component will not be able to bind to local ports that are already in use by some other instance, and attempts to do so will result in failure.

BlockedClients:   A comma-separated list of host names or IP addresses that cannot access the class.

This configuration setting defines a comma-separated list of host names or IPv4 addresses that cannot access the class.The default value is "" and all connections are accepted.

When a client connects, the client's address is checked against the list defined here. If there is a match, the ConnectionRequest event fires with an Accept value set to False. If no action is taken within the ConnectionRequest event, the client will not be connected.

ConnectionUID:   The unique connectionId for a connection.

Connection Ids may be reused as clients connect and disconnect. Querying ConnectionUID will return a unique identifier for that connection Id. If the specified connection Id does not exist, then ConnectionUID will return 0. For example:

Connection5UID = obj.config("ConnectionUID[5]")

DefaultConnectionTimeout:   The inactivity timeout applied to the SSL handshake.

This configuration setting specifies the inactivity (in seconds) to apply to incoming Secure Sockets Layer (SSL) connections. When set to a positive value, if the other end is unresponsive for the specified number of seconds, the connection will timeout. This is not applicable to the entire handshake. It is applicable only to the inactivity of the connecting client during the handshake if a response is expected and none is received within the timeout window. The default value is 0, and no connection-specific timeout is applied.

Note: This is applicable only to incoming SSL connections. This should be set only if there is a specific reason to do so.

InBufferSize:   The size in bytes of the incoming queue of the socket.

This is the size of an internal queue in the Transmission Control Protocol (TCP)/IP stack. You can increase or decrease its size depending on the amount of data that you will be receiving. Increasing the value of the InBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated, the InBufferSize reverts to its defined size. The same thing will happen if you attempt to make it too large or too small.

InBufferSize is shared among incoming connections. When the property is set, the corresponding value is set for incoming connections as they are accepted. Existing connections are not modified.

KeepAliveInterval:   The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.

A TCP keep-alive packet will be sent after a period of inactivity, as defined by KeepAliveTime. If no acknowledgment is received from the remote host, the keep-alive packet will be sent again. This setting specifies the interval at which the successive keep-alive packets are sent in milliseconds. If this value is not specified here, the system default is 1 second. This setting is applicable to all connections.

Note: This value is not applicable in macOS.

KeepAliveRetryCount:   The number of keep-alive packets to be sent before the remotehost is considered disconnected.

When set, TCPKeepAlive will automatically be set to True. A TCP keep-alive packet will be sent after a period of inactivity, as defined by KeepAliveTime. If no acknowledgment is received from the remote host, the keep-alive packet will be sent again. This setting specifies the number of times that the keep-alive packets will be sent again before the remote host is considered disconnected. If this value is not specified here, the system default is 9.

Note: This configuration setting is available only in the Unix platform, and it is not supported in macOS or FreeBSD.

KeepAliveTime:   The inactivity time in milliseconds before a TCP keep-alive packet is sent.

By default, the operating system will determine the time a connection is idle before a TCP keep-alive packet is sent. If this value is not specified here, the system default is 2 hours. In many cases, a shorter interval is more useful. Set this value to the desired interval in milliseconds. This setting is applicable to all connections.

MaxConnections:   The maximum number of connections available.

This is the maximum number of connections available. This property must be set before Listening is set to True, and once set, it can no longer be changed for the current instance of the class. The maximum value for this setting is 100,000 connections. Use this setting with caution. Extremely large values may affect performance. The default value is 1000.

Note: Unix/Linux operating systems limit the number of simultaneous connections to 1024.

MaxReadTime:   The maximum time spent reading data from each connection.

This setting specifies the maximum time in milliseconds that the class will spend reading data from a particular connection before servicing other connections. When a single client is sending data to the class at a high rate this setting is used to ensure that other connections are serviced in a timely manner. Specifying a positive value prevents a single client from monopolizing the class's resources. The special value of 0 indicates no limit and is generally not recommended.

The default value is 50 (milliseconds).

OutBufferSize:   The size in bytes of the outgoing queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be sending. Increasing the value of the OutBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the OutBufferSize reverts to its defined size. The same thing will happen if you attempt to make it too large or too small.

OutBufferSize is shared among incoming connections. When the property is set, the corresponding value is set for incoming connections as they are accepted. Existing connections are not modified.

TcpNoDelay:   Whether or not to delay when sending packets.

When true, the socket will send all data that is ready to send at once. When false, the socket will send smaller buffered packets of data at small intervals. This is known as the Nagle algorithm.

By default, this config is set to false.

UseIOCP:   Whether to use the completion port I/O model.

The default value is False. When set to True, the class will use an I/O Completion Port (IOCP) to manage operations on sockets. A single completion port allows the asynchronous notification of network events on an entire group of sockets. This property must be set before Listening is set to True.

Nothing else is required to begin accepting IOCP connections. One major benefit to using this model is that there will be no thread blocked waiting for a request to complete. The system notifies the process through an Asynchronous Procedure Call (APC) once the device driver finishes servicing the I/O request. IOCP allows a single I/O worker thread handle multiple clients' input/output "fairly".

Note: When set to True, this setting will automatically set UseWindowsMessages to False.

UseIPv6:   Whether to use IPv6.

When set to 0 (default), the class will use IPv4 exclusively. When set to 1, the class will use IPv6 exclusively. When set to 2, the class will listen for both IPv4 and IPv6 connections. If IPv6 is not available on the system, only IPv4 will be used. The default value is 0. Possible values are as follows:

0 IPv4 Only
1 IPv6 Only
2 IPv6 and IPv4

UseWindowsMessages:   Whether to use the WSAAsyncSelect I/O model.

The default value is True, and the class will receive a Windows message-based notification of network events. Turning on Windows message notifications allows the application to get connect, send, receive, and socket closure network event notifications on a socket. This property must be set before Listening is set to True.

Nothing else is required to begin accepting connections using the Windows message queue. In high-traffic environments, messages will be discarded if the queue is full. Additionally, because a single window procedure will service all events on thousands of sockets, the Windows message queue is not scalable from a performance perspective.

If this setting is set to False, the class will instead use the Winsock select model instead.

Base Config Settings

BuildInfo:   Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

CodePage:   The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:

IdentifierName
037IBM EBCDIC - U.S./Canada
437OEM - United States
500IBM EBCDIC - International
708Arabic - ASMO 708
709Arabic - ASMO 449+, BCON V4
710Arabic - Transparent Arabic
720Arabic - Transparent ASMO
737OEM - Greek (formerly 437G)
775OEM - Baltic
850OEM - Multilingual Latin I
852OEM - Latin II
855OEM - Cyrillic (primarily Russian)
857OEM - Turkish
858OEM - Multilingual Latin I + Euro symbol
860OEM - Portuguese
861OEM - Icelandic
862OEM - Hebrew
863OEM - Canadian-French
864OEM - Arabic
865OEM - Nordic
866OEM - Russian
869OEM - Modern Greek
870IBM EBCDIC - Multilingual/ROECE (Latin-2)
874ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875IBM EBCDIC - Modern Greek
932ANSI/OEM - Japanese, Shift-JIS
936ANSI/OEM - Simplified Chinese (PRC, Singapore)
949ANSI/OEM - Korean (Unified Hangul Code)
950ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026IBM EBCDIC - Turkish (Latin-5)
1047IBM EBCDIC - Latin 1/Open System
1140IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141IBM EBCDIC - Germany (20273 + Euro symbol)
1142IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144IBM EBCDIC - Italy (20280 + Euro symbol)
1145IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147IBM EBCDIC - France (20297 + Euro symbol)
1148IBM EBCDIC - International (500 + Euro symbol)
1149IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201Unicode UCS-2 Big-Endian
1250ANSI - Central European
1251ANSI - Cyrillic
1252ANSI - Latin I
1253ANSI - Greek
1254ANSI - Turkish
1255ANSI - Hebrew
1256ANSI - Arabic
1257ANSI - Baltic
1258ANSI/OEM - Vietnamese
1361Korean (Johab)
10000MAC - Roman
10001MAC - Japanese
10002MAC - Traditional Chinese (Big5)
10003MAC - Korean
10004MAC - Arabic
10005MAC - Hebrew
10006MAC - Greek I
10007MAC - Cyrillic
10008MAC - Simplified Chinese (GB 2312)
10010MAC - Romania
10017MAC - Ukraine
10021MAC - Thai
10029MAC - Latin II
10079MAC - Icelandic
10081MAC - Turkish
10082MAC - Croatia
12000Unicode UCS-4 Little-Endian
12001Unicode UCS-4 Big-Endian
20000CNS - Taiwan
20001TCA - Taiwan
20002Eten - Taiwan
20003IBM5550 - Taiwan
20004TeleText - Taiwan
20005Wang - Taiwan
20105IA5 IRV International Alphabet No. 5 (7-bit)
20106IA5 German (7-bit)
20107IA5 Swedish (7-bit)
20108IA5 Norwegian (7-bit)
20127US-ASCII (7-bit)
20261T.61
20269ISO 6937 Non-Spacing Accent
20273IBM EBCDIC - Germany
20277IBM EBCDIC - Denmark/Norway
20278IBM EBCDIC - Finland/Sweden
20280IBM EBCDIC - Italy
20284IBM EBCDIC - Latin America/Spain
20285IBM EBCDIC - United Kingdom
20290IBM EBCDIC - Japanese Katakana Extended
20297IBM EBCDIC - France
20420IBM EBCDIC - Arabic
20423IBM EBCDIC - Greek
20424IBM EBCDIC - Hebrew
20833IBM EBCDIC - Korean Extended
20838IBM EBCDIC - Thai
20866Russian - KOI8-R
20871IBM EBCDIC - Icelandic
20880IBM EBCDIC - Cyrillic (Russian)
20905IBM EBCDIC - Turkish
20924IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932JIS X 0208-1990 & 0121-1990
20936Simplified Chinese (GB2312)
21025IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027Extended Alpha Lowercase
21866Ukrainian (KOI8-U)
28591ISO 8859-1 Latin I
28592ISO 8859-2 Central Europe
28593ISO 8859-3 Latin 3
28594ISO 8859-4 Baltic
28595ISO 8859-5 Cyrillic
28596ISO 8859-6 Arabic
28597ISO 8859-7 Greek
28598ISO 8859-8 Hebrew
28599ISO 8859-9 Latin 5
28605ISO 8859-15 Latin 9
29001Europa 3
38598ISO 8859-8 Hebrew
50220ISO 2022 Japanese with no halfwidth Katakana
50221ISO 2022 Japanese with halfwidth Katakana
50222ISO 2022 Japanese JIS X 0201-1989
50225ISO 2022 Korean
50227ISO 2022 Simplified Chinese
50229ISO 2022 Traditional Chinese
50930Japanese (Katakana) Extended
50931US/Canada and Japanese
50933Korean Extended and Korean
50935Simplified Chinese Extended and Simplified Chinese
50936Simplified Chinese
50937US/Canada and Traditional Chinese
50939Japanese (Latin) Extended and Japanese
51932EUC - Japanese
51936EUC - Simplified Chinese
51949EUC - Korean
51950EUC - Traditional Chinese
52936HZ-GB2312 Simplified Chinese
54936Windows XP: GB18030 Simplified Chinese (4 Byte)
57002ISCII Devanagari
57003ISCII Bengali
57004ISCII Tamil
57005ISCII Telugu
57006ISCII Assamese
57007ISCII Oriya
57008ISCII Kannada
57009ISCII Malayalam
57010ISCII Gujarati
57011ISCII Punjabi
65000Unicode UTF-7
65001Unicode UTF-8

The following is a list of valid code page identifiers for Mac OS only:

IdentifierName
1ASCII
2NEXTSTEP
3JapaneseEUC
4UTF8
5ISOLatin1
6Symbol
7NonLossyASCII
8ShiftJIS
9ISOLatin2
10Unicode
11WindowsCP1251
12WindowsCP1252
13WindowsCP1253
14WindowsCP1254
15WindowsCP1250
21ISO2022JP
30MacOSRoman
10UTF16String
0x90000100UTF16BigEndian
0x94000100UTF16LittleEndian
0x8c000100UTF32String
0x98000100UTF32BigEndian
0x9c000100UTF32LittleEndian
65536Proprietary

LicenseInfo:   Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

  • Product: The product the license is for.
  • Product Key: The key the license was generated from.
  • License Source: Where the license was found (e.g., RuntimeLicense, License File).
  • License Type: The type of license installed (e.g., Royalty Free, Single Server).
  • Last Valid Build: The last valid build number for which the license will work.
ProcessIdleEvents:   Whether the class uses its internal event loop to process events when the main thread is idle.

If set to False, the class will not fire internal idle events. Set this to False to use the class in a background thread on Mac OS. By default, this setting is True.

SelectWaitMillis:   The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.

If there are no events to process when DoEvents is called, the class will wait for the amount of time specified here before returning. The default value is 20.

UseFIPSCompliantAPI:   Tells the class whether or not to use FIPS certified APIs.

When set to true, the class will utilize the underlying operating system's certified APIs. Java editions, regardless of OS, utilize Bouncy Castle FIPS, while all the other Windows editions make use of Microsoft security libraries.

FIPS mode can be enabled by setting the UseFIPSCompliantAPI configuration setting to true. This is a static setting which applies to all instances of all classes of the toolkit within the process. It is recommended to enable or disable this setting once before the component has been used to establish a connection. Enabling FIPS while an instance of the component is active and connected may result in unexpected behavior.

For more details please see the FIPS 140-2 Compliance article.

Note: This setting is only applicable on Windows.

UseInternalSecurityAPI:   Tells the class whether or not to use the system security libraries or an internal implementation.

By default the class will use the system security libraries to perform cryptographic functions where applicable. Setting this to true tells the class to use the internal implementation instead of using the system's security API.

Trappable Errors (SSHServer Class)

SSHServer Errors

1201   Could not forward connection. A detailed message follows.
1202   Could not forward connection/channel data. A detailed message follows.
1300   Could not authenticate client.
1301   No server certificate was specified or no private key found.

TCPServer Errors

100   You cannot change the RemotePort at this time. A connection is in progress.
101   You cannot change the RemoteHost at this time. A connection is in progress.
102   The RemoteHost address is invalid (0.0.0.0).
104   TCPServer is already listening.
106   Cannot change LocalPort when TCPServer is listening.
107   Cannot change LocalHost when TCPServer is listening.
108   Cannot change MaxConnections when TCPServer is listening.
112   You cannot change MaxLineLength at this time. A connection is in progress.
116   RemotePort cannot be zero. Please specify a valid service port number.
126   Invalid ConnectionId.
135   Operation would block.

TCP/IP Errors

10004   [10004] Interrupted system call.
10009   [10009] Bad file number.
10013   [10013] Access denied.
10014   [10014] Bad address.
10022   [10022] Invalid argument.
10024   [10024] Too many open files.
10035   [10035] Operation would block.
10036   [10036] Operation now in progress.
10037   [10037] Operation already in progress.
10038   [10038] Socket operation on non-socket.
10039   [10039] Destination address required.
10040   [10040] Message too long.
10041   [10041] Protocol wrong type for socket.
10042   [10042] Bad protocol option.
10043   [10043] Protocol not supported.
10044   [10044] Socket type not supported.
10045   [10045] Operation not supported on socket.
10046   [10046] Protocol family not supported.
10047   [10047] Address family not supported by protocol family.
10048   [10048] Address already in use.
10049   [10049] Can't assign requested address.
10050   [10050] Network is down.
10051   [10051] Network is unreachable.
10052   [10052] Net dropped connection or reset.
10053   [10053] Software caused connection abort.
10054   [10054] Connection reset by peer.
10055   [10055] No buffer space available.
10056   [10056] Socket is already connected.
10057   [10057] Socket is not connected.
10058   [10058] Can't send after socket shutdown.
10059   [10059] Too many references, can't splice.
10060   [10060] Connection timed out.
10061   [10061] Connection refused.
10062   [10062] Too many levels of symbolic links.
10063   [10063] File name too long.
10064   [10064] Host is down.
10065   [10065] No route to host.
10066   [10066] Directory not empty
10067   [10067] Too many processes.
10068   [10068] Too many users.
10069   [10069] Disc Quota Exceeded.
10070   [10070] Stale NFS file handle.
10071   [10071] Too many levels of remote in path.
10091   [10091] Network subsystem is unavailable.
10092   [10092] WINSOCK DLL Version out of range.
10093   [10093] Winsock not loaded yet.
11001   [11001] Host not found.
11002   [11002] Non-authoritative 'Host not found' (try again or check DNS setup).
11003   [11003] Non-recoverable errors: FORMERR, REFUSED, NOTIMP.
11004   [11004] Valid name, no data record (check DNS setup).

Copyright (c) 2022 /n software inc. - All rights reserved.
IPWorks SSH 2022 PHP Edition - Version 22.0 [Build 8369]