ZyXEL Communications P-793H User Manual
Chapter 7 Network Address Translation (NAT) Screens
P-793H User’s Guide
108
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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.
all packets received for ports that are not specified here or in the remote
management setup.
7.4.2 Port Forwarding: Services and Port Numbers
Use the Port Forwarding screen to forward incoming service requests to the server(s) on your
local network.
The most often used port numbers are shown in
local network.
The most often used port numbers are shown in
. Please refer to RFC
1700 for further information about port numbers.
7.4.3 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.
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 47 Multiple Servers Behind NAT Example
7.5 Configuring Port Forwarding
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The Port Forwarding screen is available when you select SUA Only in the
NAT > General screen or when you edit a server mapping set with Full
Feature NAT.
NAT > General screen or when you edit a server mapping set with Full
Feature NAT.