Web Server Related Port Number Description

PORT DESCRIPTION

FTP-data 20 Only if you use FTP on your server

FTP 21

SMTP 25 Sendmail

DNS 53 Domain Name Service

WWW 80 Standard web server port

POP3 110 For receiving email

IMAP 143

IMAP3 220

LDAP 389 Lightweight Directory Access Protocol

HTTPS 443 HTTP using SSL

SMTPS 465 Secure SMTP

IMAPS 993 Secure IMAP

MySQL 3306