Gsocket

The Global Socket Toolkit allows two users behind NAT or firewalls to establish a secure TCP connection. It utilizes the Global Socket Relay Network to facilitate communication without needing to know each other's IP addresses or port numbers. The toolkit includes tools like gsocket, which makes programs accessible from anywhere, and gs-netcat, an enhanced version of netcat that supports encrypted connections and file transfers. The service emphasizes security with end-to-end encryption and does not require public key infrastructure.