Paranoid keepalives are an enhancement of the original keepalives, that is negotiated at phase I. With the original keepalives, if a phase 1 SA is deleted because of no keepalive answer, it brings down with him _all_ phase 2 SAs with the same peer. This can lead to a situation with dangling SAs. With paranoid keepalives, the phase 2 SAs are bound to the phase 1 SA under which they were created, and when the phase 1 SA is deleted, only the associated phase 2 SAs will be deleted.
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...