Port number     Service         Why it's phun!



7               echo            Whatever you type in, the host repeats back to you



9               discard         Dev/null -- how fast can you figure out this one?



11              systat          Lots of info on users



13              daytime Time and date at computer's location



15              netstat         Tremendous info on networks



19              chargen Pours out a stream of ASCII characters. Use ^C to stop.



21              ftp             Transfers files



23              telnet          Where you log in.



25              smpt            Forge email from [email protected].



37              time            Time



39              rlp             Resource location



43              whois           Info on hosts and networks



53              domain          Nameserver



70              gopher          Out-of-date info hunter



79              finger          Lots of info on users



80              http            Web server



110             pop             Incoming email



119             nntp            Usenet news groups -- forge posts, cancels



443             shttp           Another web server



512             biff            Mail notification



513             rlogin          Remote login

                who             Remote who and uptime



514             shell           Remote command, no password used!

                syslog          Remote system logging



520             route           Routing information protocol