Articles about TCP UDP Port Numbers’

Mar 18, 2008

TCP and UDP Port Numbers

Posted by Anandhan Subbiah in Programming Concepts, Technical Articles • No comments

TCP and UDP are both transport protocols above the IP layer, which are interfaces between IP and upper-layer processes. TCP and UDP protocol port numbers are designed to distinguish multiple applications running on a single device with one IP address from one another.
Port No

Port No.

Protocol

Service Name

Aliases

Comment

1

TCP

tcpmux

TCP Port Service Multiplexer

2

TCP/UDP

compressnet

Management Utility

3

TCP/UPD

compressnet

Compression Process

7

TCP/UDP

echo

Echo

13

TCP/UDP

daytime

Daytime

19

TCP/UDP

chargen

ttytst source

Character generator

20

TCP

ftp-data

File Transfer

21

TCP

ftp

FTP Control

22

TCP

ssh

SSH [...]