Parse your PIX syslog in debugging mode for traffic from that user. Make sure that they are using standard irc and not redirecting to higher ports. Also, you might just start by reloading the PIX to clear that users xlate. If they are getting a DHCP address, are you sure the address you are using is their machine?
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...