I have been fighting with this odd error for way too long now. I have an IPSEC VPN setup (this is on a Cisco 5510-ASA) and when I test it under our dialup account, "we use this just to test the VPNs" I can terminate and get my routes (split-tunneling is on). I can ping the hosts I setup without issue as well.
Now when I disconnect this VPN and try either my AT&T T1 here at the office or my cable connection at home, both on the same laptop that worked with dial-up, again I can terminate the VPN and get the routes yet this time I cannot ping the servers at all. I hate to recreate the wheel or in this case the VPN when it does appear to work...this is the strangest error I have seen yet. I have even called in the cable company to check their lines to see if they are blocking anything which they assured me they are not and all traffic for this connection are wide open. I can send traffic out the VPN but cannot receive anything.
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...