Perl

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 Perl

use strict;
use warnings;
use Chilkat2;

my $socket = Chilkat2::Socket->new;

# Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
# not required.
my $success = $socket->SshOpenTunnel('ssh.example.com', 22);
if (!$success) {
    print $socket->LastErrorText, "\n";
    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.
my $sshPassword = 'mySshPassword';
$success = $socket->SshAuthenticatePw('sshUser', $sshPassword);
if (!$success) {
    print $socket->LastErrorText, "\n";
    exit;
}

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