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Learning by Doing: CISCO Certified Network ... - SCN Research

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Fun Ports to Surf with Telnet<br />

To open Telnet, go to START, then RUN, and type “TELNET” then press enter.<br />

***Be careful when surfing telnet ports. If you are not authorized on<br />

anyone’s computer then you will be guilty of a 2 nd Degree Felony,<br />

punishable <strong>by</strong> a minimum of 15 years for the 1 st offense!****<br />

Port Service What it is…<br />

7 Echo Whatever you type in is repeated<br />

9 Discard/null<br />

11 Systat Lots of info on users in network<br />

13 Daytime Time and date at computer’s location<br />

15 Netstat Lots of info on network—a must see!<br />

19 Chargen ASCII character stream<br />

21 ftp Transfer files<br />

23 telnet Terminal emulation program<br />

25 Smpt Mail program<br />

37 Time Time<br />

39 Rlp Resource location<br />

43 Whois info on hosts and networks<br />

53 Domain Name server<br />

70 Gopher Out-of-date information tool<br />

79 Finger UNIX information finder<br />

80 http Web server<br />

110 Pop Email post box server<br />

119 nntp News group servers<br />

443 Shttp Secure web servers<br />

512 biff Mail notification<br />

513 rlogin Remote login<br />

514 Shell Shell account for UNIX<br />

520 Route Routing information protocol<br />

138

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