1.- if one of the interfaces of the active PIX is down then failover will ocurr.
2.- If the dedicated interface for Failover failed .. then both PIXes could become Active. this is why it is advisable to use a dedicated switch for the Failover connection .. so the communication between their Failover interface is stable and can't be affected another switch failure whihc interconects the other interfaces
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...