Creating NAT rules

You must define the nicknames for the IP addresses you intend to use if you want to use network address translation (NAT).

You cannot create NAT rules with the standard 32-bit address notation. Rather than specifying a real address such as, you must refer to by a name. The system associates the name you defined with the corresponding addresses and translates them accordingly. Therefore, you must define your addresses before your system can apply NAT rules to them.

The Packet Rules Editor enables you to create two types of NAT rules. One type enables you to hide addresses while the other type enables you to map addresses.

Hiding Addresses

Hide addresses when you want to keep your private addresses hidden from public view. A hidden address rule enables you to hide multiple internal addresses behind a single public IP address. This type of NAT is also known as masquerade NAT.

Mapping Addresses

Map addresses when you want to route traffic from a single public IP address into a single internal address. This type of NAT is also known as static NAT.

For instructions on how to hide or map addresses, use the Packet Rules Editor online help.

Next Topic

If you plan to filter traffic flowing into and out of your network, go to Creating IP filter rules. Otherwise, proceed to Adding comments in the packet rules.