node-stun
STUN (Session Traversal Unitilities for NAT) for Node.js
pangoliner
pangoliner is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet. As of now, it supports tcp & udp, as well as http and https protocols, where requests can be forwarded to internal services by domain name.
stunsrv
A STUN client/server package.
portmp
port mapping. A fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet. support TCP & UDP