We use cicso vpn client vpn 3.5.2 (a?) on winxp. AFter connecting to our PIX, we often lose email services. Using outlook express, we get an error message stating that the pop or smtp server is not responding. Since the client is now using our internal dns, pop.company.com is resolved to an internal address, the internal address is pingable, and doing a nslookup with the client machine indicates that pop.company.com is being successfully resolved to the proper internal address. Closing the vpn connection, pop.company.com is now resolved to the public address via the roadwarriors' public dns server and email happily works again. Any ideas? Thanks.
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...