I agree that the old NAT configuration format in some situations was a lot simpler and you potentially created a lot simpler configuration. In larger environments and more special setups I do think that the new NAT configuration format is far more simpler/safer to configure and provides more flexibility. There are some issues with it that I still dont have clear answer to but for the most part it seems to work just fine.
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...