Open a Forwarded Channel through an SSH Tunnel

See more Socket/SSL/TLS Examples

Demonstrates Socket.SshNewChannel, which opens a port-forwarded channel through an authenticated SSH tunnel to a destination host and port, populating a Socket with the connected channel.

Dim success As Boolean = False

Dim socket As New 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 = False) Then
    Debug.WriteLine(socket.LastErrorText)
    Exit Sub
End If


'  Authenticate the SSH session before opening forwarded channels.
'  The SSH password should come from a secure source rather than being hard-coded.
Dim sshPassword As String = "mySshPassword"
success = socket.SshAuthenticatePw("sshUser",sshPassword)
If (success = False) Then
    Debug.WriteLine(socket.LastErrorText)
    Exit Sub
End If


'  Open a port-forwarded channel through the authenticated SSH tunnel to the destination host and
'  port, populating a Socket with the connected channel.  Set the 3rd argument to True to establish
'  TLS to the destination inside the tunnel.
Dim bTls As Boolean = False
Dim maxWaitMs As Integer = 20000
Dim channel As New Chilkat.Socket
success = socket.SshNewChannel("db.internal",5432,bTls,maxWaitMs,channel)
If (success = False) Then
    Debug.WriteLine(socket.LastErrorText)
    Exit Sub
End If


'  Use the channel socket to send and receive with the destination through the tunnel.
Debug.WriteLine("Forwarded channel opened to the destination.")