socat Multipurpose relay (SOcket CAT). Listen to a port, wait for an incoming connection and transfer data to STDIO: socat - TCP-LISTEN:8080,fork Create a connection to a host and port, transfer data in STDIO to connected host: socat - TCP4:www.domain.com:80 Forward incoming data of a local port to another host and port: socat TCP-LISTEN:80,fork TCP4:www.domain.com:80