As mentionned in the PIX 6.3 specifications, we are able to nat outer address on less secure interface on the PIX (6.3).
In my case, I have a connection to open from a host A (192.168.40.40) on the inside interface to a host B (10.125.125.125) on the outside interface. I have to nat (static) the address 10.125.125.125 to 220.127.116.11 on the outside interface so the internal host (A) will open its connection to host B using 192.168.50.50 as destination IP address instead of 10.125.125.125.
My question is:
1- How should I configure that NAT on the PIX?
2- The security rule to permit A to initiate a connection to B, should be configured with which destination address (the real or the natted)?
Assuming, "inside" and "outside" refer to more secure and less secure (respectively) interfaces, this should be a relatively simple destination NAT exercise. The command to do this in the 6.3 release of PIX code should look something like this:
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...