Sorry I can't help you with your question but, I am/was determine to get VPN client 2.5.2 (upgraded to 3.1) to work with windows ICS. I had found an interesting windows KB article about port mapping the ICS host to clients?? Could it be possible this is why Cisco vpn clients will not work with ICS. I have looked at their(cisco) dox and it seems to indicate it should work from a CLIENT of the ICS host. But, I have yet heard from anyone who has accomplished this! I don't mind buying a router w/IPsec passthrough but, if ICS will not work then CISCO's documentation should state it won't work from the Client!!
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...