A node.js proxy listening on port 80 that forwards HTTP or SSH traffic to different ports. Thus SSH might become reachable to a somewhat restrictive hotel or corporate firewall, while HTTP can still be served as well.

http-and-ssh-proxy.js

var fs = require('fs');
var net = require('net');
var http = require('http');

var sshAddress = '22';
var httpAddress = '8080';
var incoming = '80';
http.createServer(httpConnection).listen(httpAddress);
net.createServer(tcpConnection).listen(incoming);

function tcpConnection(conn) {
  conn.once('data', function(buffer) {
    var address = (buffer.toString().substr(0,3) == 'SSH') ? sshAddress : httpAddress;
    var proxy = net.createConnection(address, function() {
      proxy.write(buffer);
      conn.pipe(proxy).pipe(conn);
    });
  });
}

function httpConnection(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}