I have a Pix 515 at one site that I need to set up with P2P VPN access to another site. My problem is that the outside interface of the Pix is not an external IP address. The border router that I have at the location has two separate internet T1s coming into it from two separate ISPs. So connection between the border router and the Pix is a 172.16.x.x/30 and we route all traffic down that, then we use route mapping to force specific traffic down one of the internet pipes based on the source IP (using NAT).
Since the firewall's ouside interface is a 172.16.x.x/30 address instead of a real world external IP how do I set it up for the P2P VPN?
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...