I installed the Cisco VPN client version 5.0.02.0090 on a fresh install of WinXP/SP2 and when the PC is connected via ethernet to my DSL router, I can VPN just fine. When I disconnect from ethernet and use wireless to the DSL router, within seconds of brining up the VPN tunnel it is torn down with the dreaded 422 error "Secure VPN connection terminated locally by the Client. Reason 422:Lost contact with the security gateway. Check your network connection"
The client log shows the underlying IP address changes after Address watch is initiated, to the IP address that our headend concentrator gives out to VPN clients. Then the errors start to show up in the log like:
Marking IKE SA for deletion (I_Cookie=6777C38CD571D27F R_Cookie=7F54F6FE73061972) reason = DEL_REASON_ADDRESS_CHANGE
...then lots of errors in log as phase I, keys and everything else is deleted.
This is repeatable every time I load the VPN client while I'm using wireless. The wireless adapter is a Realtek USB adapter. I've googled error 422 and other people are getting the same problem, but there is no solution, and most cases are when users are on Windows Vista.
Is this a known Cisco problem and is there a fix for it?
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...