Important Application, Protocol and Port Number tutorials

 

Application

Protocol and Port No

FTP - File Transfer Protocol

TCP 20 for Data

FTP - File Transfer Protocol

TCP 21 for Control

TELNET

TCP 23

SMTP -Simple Mail Transfer Protocol to send mail

TCP 25

DNS - Domain Name System

TCP 53

UDP 5

DHCP -Dynamic Host Configuration Protocol for Server

UDP 67

DHCP -Dynamic Host Configuration Protocol for Client

UDP 68

HTTP -Hyper Text Transfer Protocol

TCP 80

Windows Product Activation

TCP 80 and 443

POP3 - Post Office Protocol 3 used to retrieve email

TCP 110

NNTP Network News Transfer Protocol

TCP 119

RPC - Remote Procedure Call

TCP 135

IMAP - Internet Message Access Protocol

TCP 143

SNMP - Simple Network Management Protocol

UDP 161

HTTPS - Hyper Text Transfer Protocol Secure

TCP 443

SSL - Secure Server Layer

TCP 686

L2TP - Layer Two Tunneling Protocol

UDP 1701

PPTP - Point to Point Tunneling protocol

TCP 1723

RDP - Remote Desktop Protocol

TCP 3389

 


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