Hi, I have 2 remote offices facing the Internet each with 1 PIX (6.2) and I would like to connect the 2 networks with a VPN gateway-to-gateway.
The problem is that one pix is behind a natting router (not controlled by my organization). A VPN client-to-gateway (the client is behind the NAT) is currently working but a VPN gateway-to-gateway is a different thing.
Do you think there is a way to have it working in this configuration?
If your Client-Gateway connection is going to the same Gateway as your Gateway-Gateway connection, you might have a problem with ISAKMP. ISAKMP is using UDP port 500 for both the source and destination port. By using PNAT, you migh have an issue if your NATing device changes the source port number. Look at your translation table on the router (or whoever has access) to see if any port translation has occured.
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...