AutoIt

Multi-Hop SSH (SSH Through SSH)

See more SSH Examples

Demonstrates how to SSH through one SSH server to get to another SSH server. The scheme looks like this:

Application => ServerSSH1 => ServerSSH2

The ConnectThroughSsh method is added in Chilkat version 9.5.0.55 to accomplish this task. Technically, it should be possible to chain any number of servers using the ConnectThroughSsh multiple times:

Application => ServerSSH1 => ServerSSH2 ==> ServerSSH3 => ... => ServerSSHN

AutoIt

Local $bSuccess = False

; This example assumes the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

$oSsh1 = ObjCreate("Chilkat.Ssh")

; Hostname may be an IP address or domain name:
Local $sHostname = "192.168.1.108"
Local $sPort = 22

; Connect directly to the 1st SSH server:
$bSuccess = $oSsh1.Connect($sHostname,$sPort)
If ($bSuccess <> True) Then
    ConsoleWrite($oSsh1.LastErrorText & @CRLF)
    Exit
EndIf

; Wait a max of 15 seconds when reading responses..
$oSsh1.IdleTimeoutMs = 15000

; Authenticate using login/password:
$bSuccess = $oSsh1.AuthenticatePw("myLogin","myPassword")
If ($bSuccess <> True) Then
    ConsoleWrite($oSsh1.LastErrorText & @CRLF)
    Exit
EndIf

; Connect through the 1st SSH connection to reach a 2nd SSH server.
; Note: Any number of SSH connections may be simultaneously tunneled through a single
; existing SSH connection.
$oSsh2 = ObjCreate("Chilkat.Ssh")
$bSuccess = $oSsh2.ConnectThroughSsh($oSsh1,"someremoteserver.com",22)
If ($bSuccess <> True) Then
    ConsoleWrite($oSsh2.LastErrorText & @CRLF)
    Exit
EndIf

$oSsh2.IdleTimeoutMs = 15000

; Authenticate with ssh2...
$bSuccess = $oSsh2.AuthenticatePw("myLogin2","myPassword2")
If ($bSuccess <> True) Then
    ConsoleWrite($oSsh2.LastErrorText & @CRLF)
    Exit
EndIf

; The application may now is connected and authenticated with ssh2.
; The application can do whatever it desires just as if it was directly
; connected to ssh2.   For example, the application might open
; a session channel to send commands or start a remote shell..
Local $iChannelNum = $oSsh2.OpenSessionChannel()
If ($iChannelNum < 0) Then
    ConsoleWrite($oSsh2.LastErrorText & @CRLF)
    Exit
EndIf

; ...
; ...
; ...

; Close the connection with ssh2.  (This closes the the tunnel through ssh1.)
; The connection with ssh1 is still alive, and may be used for more connections.
$oSsh2.Disconnect 

; ...
; ...
; ...

$oSsh1.Disconnect