NAT Pools help routers on a network to learn the reachability information of IP addresses.
NAT Pools are exportable, like routes, through routing protocols, but NAT pools are not used for local forwarding.
Each NAT Pool has only its destination prefix, and optionally a comment.
A host is located behind a Gaia Check Point security operating system that combines the strengths of both SecurePlatform and IPSO operating systems. Security Gateway Dedicated Check Point server that runs Check Point software to inspect traffic and enforce Security Policies for connected network resources..
The host's source IP address is NATed to another external IP address (hidden behind NAT).
This external NATed IP address does not belong to any local network.
Routers on the network must route the return traffic to that external (NATed) IP address.
Gaia administrator creates a NAT pool that contains this external IP address and redistributes this NAT pool through OSPF or BGP to the applicable routers on the network.
This way the routers learn about the NATed IP addresses.