Sara Abbasi

*20 common ports

*TCP Port Service Multiplexer

*Remote Job Entry

*ECHO

*Message Send Protocol

*FTP -- Data

*FTP -- Control

*SSH Remote Login Protocol

*Telnet

*Simple Mail Transfer Protocol

*MSG ICP

*Time

*Host Name Server

*WhoIs

*Login Host Protocol

*Domain Name System

*Trivial File Transfer Protocol

*Gopher Services

*Finger

*HTTP

*X.440 Standard