Just to let you know that I have been able to fix this problem.
The solution that worked for me was to deploy CTA v1 using the OfficeScan server. Once this was deployed CTAv1 worked fine. After this I installed CTAv2 over the top on the client machine and tested NAC again. It worked! I am now testing again to see if I have to do this on all clients.
I would still be interested to see if anyone else has had this trouble and what actions they took!
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...