We have a site to site VPN built from a ASA 5510 to a Cisco 877. A number of times a day the vpn tunnel stops forwarding traffic to certain subnets. For instance subnet a,b,c are reachable then for no reason subnet b will become non reachable. A and C are fine. If i reset the tunnel then traffic can connect to all 3 subnets again.
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...