ZyXEL Communications P-660HN-F1A, User Manual

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Chapter 9 Network Address Translation (NAT)
P-660HN-F1A User’s Guide
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Configuring Servers Behind Port Forwarding (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 192.168.1.35 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 66 Multiple Servers Behind NAT Example
9.3.1 Configuring the Port Forwarding Screen
Click Network > NAT > Port Forwarding to open the following screen.
See Appendix E on page 413 for port numbers commonly used for particular
services.
Figure 67 Network > NAT > Port Forwarding
A=192.168.1.33
D=192.168.1.36
C=192.168.1.35
B=192.168.1.34
WAN
LAN
192.168.1.1
IP Address assigned by ISP