socat example 1

[tom]$ sudo yum install socat
[tom]$ sudo /sbin/iptables -L -n
[tom]$ socat -u TCP4-LISTEN:6000,reuseaddr,fork OPEN:/tmp/captureport6000.txt,creat,append 

(open another terminal on a remote host)

[jerry]$ telnet tom 6000
Trying 192.168.1.202...
Connected to tom.
Escape character is '^]'.
Hello world.
^]
telnet> quit
Connection closed.

(now let's check our capture)

[tom]$ cat /tmp/captureport6000.txt 
Hello world.