Configuring Servers Behind Sua (Example); Configuring Virtual Servers; Figure 52 Multiple Servers Behind Nat Example; Table 31 Services And Port Numbers - ZyXEL Communications P-330W - V1.90 User Manual

The most often used port numbers are shown in the following table. Please refer to RFC 1700
for further information about port numbers.

Table 31 Services and Port Numbers

SERVICES
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)

7.5.1 Configuring Servers Behind SUA (Example)

Let's say you want to assign ports 21-25 to one FTP, Telnet and SMTP server (A in the
example), port 80 to another (B in the example) and assign a default server IP address of
192.168.10.35 to a third (C in the example). You assign the LAN IP addresses and the ISP
assigns the WAN IP address. The NAT network appears as a single host on the Internet

Figure 52 Multiple Servers Behind NAT Example

7.5.2 Configuring Virtual Servers

To configure Virtual Server, click ADVANCED then the VIRTUAL SERVERS link. The
screen appears as shown.
P-330W User's Guide
Chapter 7 Advanced Options
PORT NUMBER
7
21
25
53
79
80
110
119
161
162
1723
89