ucspi-tcp v0.84 – tcpserver/tcpclient package that is an excellent replacement for inetd. tcpserver and tcpclient are easy-to-use command-line tools for building TCP client-server applications. tcpserver waits for incoming connections and, for each connection, runs a program of your choice. Your program receives environment variables showing the local and remote host names, IP addresses, and port numbers. tcpclient makes a TCP connection and runs a program of your choice. It sets up the same environment variables as tcpserver. The excellent design and options make this a reliable, secure, and durable TCP tool.
You can download it from the following link: https://packetstormsecurity.com/files/download/13371/ucspi-tcp-0.84.tar.gz
Source: https://packetstormsecurity.com/files/13371/ucspi-tcp-0.84.tar.gz.html