function add(port, node) {
    //logger.master(nodes[node] + ' ' + port + ' ' + node); // DEBUG
    try {
        if(!node && node !== 0) {
            logger.error(sprintf('Node %d doesn\'t exist', node));
            return;
        }
        if(!nodes[node]) {
            logger.error(sprintf('Node %d doesn\'t exist.', node));
            return;
        }
        if(!port) {
            logger.error(sprintf('Port %d is invalid.', port));
            return;
        }

        forwarders[port] = {};
        forwarders[port].listening = true;
        forwarders[port].port = port;
        forwarders[port].node = node;

        forwarders[port].server = net.createServer(function(from) {
            var to = net.createConnection({
                host: nodes[node],
                port: port
            });

            from.pipe(to);
            to.pipe(from);
        }).listen(port, '188.226.152.56');

        forwarders[port].server.on('listening', function() {
            forwarders[port].listening = true;
            //logger.master(sprintf('Forwarding port %d to node %s.', parseInt(port), nodes[node]));
        });

        forwarders[port].server.on('close', function() {
            forwarders[port].listening = false;
        });
    } catch(ex) {
        var errMsg = 'An error occured while forwarding traffic from port %d to node %d:\n%s';
        logger.error(sprintf(errMsg, port, node, ex));
    }
}