I have run on the failover PIX for a few weeks. In fact it became the defacto active PIX it ran for so long. There was no reason to fail back to the active, so it was left as is, and ran fine with no issues. Having a time restraint on it wouldn't be very useful, what if you couldn't get the old failed active PIX up in 2 days, you would be left without a FW. Wouldn't make sense (support costs would be too high for some companies that way).
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...