You really dont need a route outside statemetn for the remote internal network.
You just need a default route statement on the PIX.
Once the PIX has a default route, the route table on the PIX will forward to the next hop and get to the peer IP. The peer will do its job. If you are going to be specific on the routes, then add a route for the remote peer.
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...