I have a ASA 5510 with 2 domains connected to separate internal interfaces both NAT'ed to public IPs and one external interface with a public IP everything is working great apart from if one domain sends an email to the other.
Internal users on each domain resolve the other domain name to it's public ip. I have setup DNS rewrite but this has not solved the problem, all external users can access both domains.
Thanks for the example cofig and diagram, I have attached a layout of what I am trying to achieve, if company 1 send an email to company 2 it fails, or browses a web page hosted by the other company. I want the 2 companies to be separate although they are both using the same ASA.
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...