PHP

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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Chilkat2 PHP

<?php

use Chilkat2\Socket;

$socket = new Socket();

// Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
// not required.
try {
    $socket->SshOpenTunnel('ssh.example.com', 22);

    // 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';
    $socket->SshAuthenticatePw('sshUser', $sshPassword);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "SSH tunnel established and authenticated.\n";