This would be hard to trace effectively without access to the logs on the concentrator. I'd try removing the client software completely (check the registry as it leaves entry's in there) and rebooting then re-installing. You could always tell a small fib and say its your laptop that cant connect instead ? That way they'd have to look at the problem :)
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...