Port numbers for some services
Service
FTP
Telnet
SMTP
DNS (Domain Name Server)
www-http (Web)
Configure a PPTP server Behind SUA
Introduction
PPTP is a tunneling protocol defined by the PPTP forum that allows PPP packets to be encapsulated within
Internet Protocol (IP) packets and forwarded over any IP network, including the Internet itself.
Port Number
21
23
25
53
80
All contents Copyright 2007 ZyXEL Communications Corporation.
P2302RL-P1 Support Notes
14