socat:tldr:adde0

The command "socat TCP-LISTEN:80,fork TCP4:www.example.com:80" uses the "socat" command-line utility to create a TCP port-forwarding functionality. It listens on port 80 (TCP) and forwards any incoming connections to another server with the address "www.example.com" on port 80.

Let's break down the command parts:

• "socat": This command starts the socat utility.
• "TCP-LISTEN:80,fork": Specifies that socat should listen for incoming connections on TCP port 80. The "fork" option means that socat will handle multiple connections by forking a new process for each, allowing simultaneous connections.
• "TCP4:www.example.com:80": Specifies that socat should forward the received connections to the server with the address "www.example.com" on port 80. It uses the TCP4 protocol (IPv4) to communicate with the destination server.

In summary, this command sets up a port forwarding from port 80 on the local machine to port 80 on the "www.example.com" server, allowing incoming connections to be redirected to the specified server.