Chapter 19 Firewall

•Besides configuring the firewall, you also need to configure NAT rules to allow computers on the WAN to access LAN devices. See Chapter 13 on page 221 for more information.

•The ZyWALL applies NAT (Destination NAT) settings before applying the firewall rules. So for example, if you configure a NAT entry that sends WAN traffic to a LAN IP address, when you configure a corresponding firewall rule to allow the traffic, you need to set the LAN IP address as the destination.

•The ordering of your rules is very important as rules are applied in sequence.

 

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ZyWALL 110/310/1100 Series User’s Guide