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ENGLISH
10
6 NAT
NAT (Network Address Translation - NAT, RFC 1631) means the translation of an IP address in one network
to a different IP address in another. You can use the NAT Address Mapping screens to have the ZyWALL
translate multiple public IP addresses to multiple private IP addresses on your LAN (or DMZ).
The following example allows access from the WAN1 to an HTTP (web) server on the DMZ. The server has a
private IP address of 10.0.0.20.
1 Click ADVANCED > NAT in the
navigation panel and then Port
Forwarding.
2 Select the WAN connection (WAN1) for
which you want to configure port
forwarding rules.
3 Select the Active check box.
4 Type a name for the rule.
5 Type the port number that the service
uses.
6 Type the HTTP server’s IP address.
7 Click Apply.
7 Firewall
You can use the ZyWALL without configuring the firewall.
The ZyWALL’s firewall is pre-configured to protect your LAN from attacks from the Internet. By default, no
traffic can enter your LAN unless a request was generated on the LAN first. The ZyWALL allows access to the
DMZ from the WAN or LAN, but blocks traffic from the DMZ to the LAN.
If you are using the ZyWALL in router mode, continue with the next section. For bridge mode, skip to Section
10.