We have several vpn tunnel connecting head office with branches using ASA 5500 devices . The tunnels work fine , but recently i see the subject error messages from both end devices of one tunnel. Tunnel itself is still operational despite the error . I have double checked the crypto map and IKE settings and they seem to match on both devices .
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...