Chapter 11 Network Address Translation (NAT)
VMG/XMG Series User’s Guide
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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 152   Multiple Servers Behind NAT Example
DSL
IP Address assigned by ISP