CCO has a great tool that analyzes the output of the sh int CLI command and explains the cause of the errors and offers tips on how to react to the errors or warnings. Start CCO, login, select technical support, then tools & utilities and finally Output Interpreter. Works great, I use it to show clients where the problems are.
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...