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:The amazing tool called netcat
"Of course you can argue that you can do the same thing with telnet too. Simply running
$ telnet 192.168.1.5 80
will tell us if a HTTP server is listening at port 80 in 192.168.1.5. nc will do the same thing with
$ nc -v 192.168.1.5 80
You can run a TCP server on 192.168.1.3 with
$ nc -l -p 1234
and you can connect to it from another machine by
$ nc 192.168.1.3 1234
Complete Story
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Linux.com: CLI Magic: netcat(Nov 15, 2005)
Linux.com: CLI Magic: Netcat(Mar 01, 2005)
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