**1 failover communications are not working well and the secondary reboots and finds that there is no active device and becomes active
**2 if all sorts of failover communication is lost. i mean the devices cannot communicate with each other from either the failover link nor the interfaces which are being monitored, so the standby thinks there is no active is as it does not get any hearbeat packets on ip port 107 on any of the interfaces
## to continue point 2, if at all you have a common switch (all the interface of firewall including failover are connected to this switch) and it crashed or rebooted
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...