I have replaced a PIX with an ASA5510 running 7.2 code. The VPN to a 3000 series concentrator runs fine but the VPN to a PIX running 6.2 code only works if we issue a "clear crypto isakmp sa" on the PIX. It then runs fine until something interupts it (say the Internet connection drops for a few seconds). Then it never re-establshes until we again do a "clear crypto isakmp sa" on the PIX. Rebooting the ASA does not help. The connection from the ASA to the 3000 concentrator on the other hand comes back up fine after an interruption.
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...