Devices ASA 5510, remote router Linksys RVS4000, Client OS Vista Ultimate 64bit. Problem: After signing in to Cisco Easy VPN, authentication succeeds and checks for updates, begins to set up connection to VPN server, midway through an error pops up "Could not verify IP fowarding table modifications, VPN connection couldn't be established" What could be the cause?? There are about 2-3 other users with different routers and OS that are having the same issue.
At least this bug is not listed in Anyconnect version 2.2 release march/2008, if you have anyconnect version 2.1 in firewall you may want to try upgrading to 2.2, if not the link above provides with workaround .
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...