var config = {
      username:'root',
      password:'secret',
      host:sshServer,
      port:22,
      dstHost:destinationServer,
      dstPort:27017,
      localHost:'127.0.0.1',
      localPort: 27000
    };

    var tunnel = require('tunnel-ssh');
    tunnel(config, function (error, server) {
      //....
    });