Is it possible to do this when there is a device in the path of the VPN tunnel that will do static NAT?
The reason for this is that the Pix's external interface will have a private address and this is the end point of the tunnel. The device doing NAT has a public address which the VPN client will think is the end of the tunnel, the static NAT will translate incoming packets on UDP port 500 to have a destination of the Pix.
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...