PowerShell

Open an SSH Tunnel

Demonstrates Socket.SshOpenTunnel, which connects to an SSH server and initializes an SSH tunneling session, then authenticates it.

Background. An SSH tunnel lets a socket reach a destination host through an SSH server using port forwarding. The sequence is: open the tunnel, authenticate, then open forwarded channels to destinations.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

$socket = New-Object Chilkat.Socket

#  Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
#  not required.
$success = $socket.SshOpenTunnel("ssh.example.com",22)
if ($success -eq $false) {
    $($socket.LastErrorText)
    exit
}

#  After the tunnel is open, authenticate before opening forwarded channels.
#  The SSH password should come from a secure source rather than being hard-coded.
$sshPassword = "mySshPassword"
$success = $socket.SshAuthenticatePw("sshUser",$sshPassword)
if ($success -eq $false) {
    $($socket.LastErrorText)
    exit
}

$("SSH tunnel established and authenticated.")