ucspi-tcp

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{{Portal|Free and open-source software}}

ucspi-tcp is a public domain Unix TCP command-line tool for building TCP client-server applications. It consists of super-server tcpserver and tcpclient application.

From [http://www.lifewithqmail.org/lwq.html "Life with qmail"], Dave Sill, 2 January 2006 [http://www.lifewithqmail.org/lwq.html#ucspi-tcp (Appendix B.3.)]: ucspi-tcp is an acronym for UNIX Client-Server Program Interface for TCP, and it is pronounced ooks-pie tee see pee.

tcpserver features built-in TCP Wrapper-like access control.