My thoughts from previous discussion with ACS unit. This seem to be an undocumented feature. Initially, developers had some plan to authenticate ACS GUI administrator to some external tacacs server. However, eventually they dropped it. You will see this command in few version of ADE-OS but not in all.
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...