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5 configuring port forwarding – ZyXEL Communications P-2602R-DxA Series User Manual

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P-2602R/RL-DxA Series User’s Guide

Chapter 9 Network Address Translation (NAT) Screens

115

9.4.3 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 54 Multiple Servers Behind NAT Example

9.5 Configuring Port Forwarding

Note: 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 50 on page 152

for port numbers commonly used for particular services.

Figure 55 Port Forwarding

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