Chapter 9 Network Address Translation (NAT)

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 68 Multiple Servers Behind NAT Example

A=192.168.1.33 LAN

 

WAN

B=192.168.1.34

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

192.168.1.1

C=192.168.1.35 D=192.168.1.36

IP Address assigned by ISP

9.3.1 Configuring the Port Forwarding Screen

Click Network > NAT > Port Forwarding to open the following screen.

See Appendix E on page 411 for port numbers commonly used for particular services.

Figure 69 Network > NAT > Port Forwarding

 

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P-660HW-Tx v3 Series User’s Guide