netcat is a computer networking utility for reading from and writing to network connections on either TCP or UDP. Netcat was voted the second most useful network security tool in a 2000 poll conducted by insecure.org on the nmap users mailing list.[1] In 2003, it gained fourth place.[2]
Variants
The original version of netcat is a UNIX program. Its author is known as *Hobbit*. He released version 1.1 in March of 1996. Netcat is fully POSIX compatible and there exist several implementations, including a rewrite from scratch known as GNU netcat, which is maintained by Giovanni Giacobbi and an MS-Windows version of netcat created by Chris Wysopal. On some systems, modified versions or similar utilities go by the command name(s) nc, ncat, pnetcat, socat, sock, socket, sbd. socat is a more complex cousin of netcat. It is larger and more flexible than netcat, and has more options that must be configured for a given task.
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