Table 8-3 Services And Port Numbers - ZyXEL Communications Prestige 653HWI series User Manual

Many residential broadband ISP accounts do not allow you to run any server
processes (such as a Web or FTP server) from your location. Your ISP may
periodically check for servers and may suspend your account if it discovers any
active services at your location. If you are unsure, refer to your ISP.
The most often used port numbers are shown in the following table. Please refer to RFC 1700 for further
information about port numbers.
ECHO
FTP (File Transfer Protocol)
SMTP (Simple Mail Transfer Protocol)
DNS (Domain Name System)
Finger
HTTP (Hyper Text Transfer protocol or WWW, Web)
POP3 (Post Office Protocol)
NNTP (Network News Transport Protocol)
SNMP (Simple Network Management Protocol)
SNMP trap
PPTP (Point-to-Point Tunneling Protocol)
8.3.2 Configuring Servers Behind SUA (Example)
Let's say you want to assign ports 22-25 to one server, port 80 to another and assign a default server IP
address of 192.168.1.35 as shown in the next figure.
NAT

Table 8-3 Services and Port Numbers

SERVICES
Prestige 653HWI Series User's Guide
PORT NUMBER
7
21
25
53
79
80
110
119
161
162
1723
8-7