Question about NAT pool Overlap



  • I have several LANs which communicate to the Internet to the same WAN Interface.  Let's say I have the Outbound NATing set to use the same NAT Address for traffic from each of those LANs.  Is it possible that different LANs (different NAT pools) could use the same port number in the address translation.  I suspect this will require looking at the source to see - but I'm curious if there's any logic to keep one LAN from NATing to a port that might be in use in another LAN?



  • sorry i can't get your picture. what is it that you want to come up with?



  • @perdong:

    sorry i can't get your picture. what is it that you want to come up with?

    I guess, technically, I should refer to the many to 1 NATing used in the Outbound NAT feature as what it really is – PAT (Port Address Translation).  Since I've configured several LANs to do PAT to a single address (for the sake of simplifying this discussion) - I'm curious about the possibility of a port number collision on those translations.