def star_forward(cluster, logdir, cmdline, *args):
    global forwarding_dest

    if len(args) == 1:
        forwarding_dest = (args[0], 80)
    elif len(args) > 1:
        forwarding_dest = (args[0], int(args[1]))
    print('Setting up remote port forwards to', forwarding_dest)

    for host, t in cluster.connections.items():
        # even do this on temporarily disabled servers, in case user
        # invokes *fwd then reenables hosts
        try:
            if host not in cluster.reverse_port:
                listener = t.request_port_forward('127.0.0.1', 0, forwarding)
                if listener:
                    cluster.reverse_port[host] = listener
                else:
                    print('Remote host %s denied port-forward request' % host)
        except Exception as e:
            print(e)
Try to setup reverse tunnel back to here
dataset/ETHPy150Open radssh/radssh/radssh/star_commands.py/star_forward