Device Configuration 5 - 295
8. If adding a new NAT policy or editing the configuration of an existing policy, define the following parameters:
9. Select the + Add Row button as needed to append additional rows to the IP Address Range table.
10. Select OK to save the changes or overrides made to the profile’s NAT Pool configuration. Select Reset to revert to the last
saved configuration.
11. Select the Static NAT tab. The Source tab displays by default.
The Source tab displays existing static NAT configurations. Existing static NAT configurations are not editable, but new
configurations can be added or existing ones deleted as they become obsolete.
Static NAT creates a permanent, one-to-one mapping between an address on an internal network and a perimeter or
external network. To share a Web server on a perimeter interface with the Internet, use static address translation to map
the actual address to a registered IP address. Static address translation hides the actual address of the server from users
on insecure interfaces. Casual access by unauthorized users becomes much more difficult. Static NAT requires a dedicated
address on the outside network for each host.
Figure 5-188 Device Overrides - Static NAT screen
To map a source IP address from an internal network to a NAT IP address click the Add button. The following screen
displays:
Name If adding a new NAT policy, provide a name to help distinguish it from others with
similar configurations. The length cannot exceed 64 characters.
IP Address Range Define a range of IP addresses hidden from the public Internet. NAT modifies network
address information in the defined IP range while in transit across a traffic routing
device. NAT only provides IP address translation and does not provide a firewall. A
branch deployment with NAT by itself will not block traffic from being potentially routed
through a NAT device. Consequently, NAT should be deployed with a stateful firewall.
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