If you have a version 5.x sensor, launching IDM and finding your way to the signature configuration portion will show you a list of all the signatures on the box and their enabled/disabled retired/unretired status - you can also sort by any of the displayed criteria by clicking on the column.
*or* You can visit MySDN (the new home for signatures and security intelligence) here:
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...