Configuring Servers Behind Port Forwarding (Example); Configuring Port Forwarding; Figure 75 Multiple Servers Behind Nat Example - ZyXEL Communications P-660HW-D User Manual

8.4.3 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 75 Multiple Servers Behind NAT Example

8.5 Configuring Port Forwarding

The Port Forwarding screen is available only when you select SUA Only in the
NAT > General screen.
If you do not assign a Default Server IP address, the ZyXEL Device discards all
packets received for ports that are not specified here or in the remote
management setup.
Click Network > NAT > Port Forwarding to open the following screen.
See Table 47 on page 130
P-660HW-D User's Guide
Chapter 8 Network Address Translation (NAT) Screens
for port numbers commonly used for particular services.
131