I'm configuring a VPN for the first time with a 1720 and an 806. Both routers are doing NAT (with an address pool). There is a router in between them, so both gateways are set to the 2 interfaces on the "middle" router. The VPN does not work. The SA's appear to be formed, though. When viewing the debug messages, the following lines appear:
01:40:12: IPSEC(validate_transform_proposal): proxy identities not supported
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...