ucspi-tcp is a

public domain The public domain (PD) consists of all the creative work to which no exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable. Because those rights have expired, ...

Unix Unix (; trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, a ...

TCP command-line tool for building TCP client-server applications. It consists of

super-server A super-server or sometimes called a service dispatcher is a type of daemon run generally on Unix-like systems. Usage A super-server starts other servers when needed, normally with access to them checked by a TCP wrapper. It uses very few re ...

''tcpserver'' and ''tcpclient'' application. Fro
"Life with qmail"
Dave Sill, 2 January 200

''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 __NOTOC__ TCP Wrappers (also known as tcp_wrappers) is a host-based networking ACL system, used to filter network access to Internet Protocol servers on (Unix-like) operating systems such as Linux or BSD. It allows host or subnetwork IP addresse ...

-like access control.

ucspi-tcp competes with several other programs

*mconnect client supplied as part of

SunOS SunOS is a Unix-branded operating system developed by Sun Microsystems for their workstation and server computer systems. The ''SunOS'' name is usually only used to refer to versions 1.0 to 4.1.4, which were based on BSD, while versions 5.0 ...

*faucet and hose, part of the netpipes package *

netcat netcat (often abbreviated to nc) is a computer networking utility for reading from and writing to network connections using TCP or UDP. The command is designed to be a dependable back-end that can be used directly or easily driven by other pr ...

External links

* http://cr.yp.to/ucspi-tcp.html Unix network-related software Transmission Control Protocol Public-domain software with source code {{Unix-stub