Ruby

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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Ruby

require 'chilkat'

success = false

socket = Chilkat::CkSocket.new()

#  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)
    print socket.lastErrorText() + "\n";
    exit
end

#  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 == false)
    print socket.lastErrorText() + "\n";
    exit
end

print "SSH tunnel established and authenticated." + "\n";