Chapter 11 Network Address Translation (NAT)
Nebula Mobile Router User’s Guide
206
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 133 Multiple Servers Behind NAT Example
NNTP (Network News Transport Protocol) 119
PPTP (Point-to-Point Tunneling Protocol) 1723
Table 78 Services and Port Numbers
SERVICES PORT NUMBER
IP Address assigned by ISP
ZD
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