you can have even a router with advanced enterprise IOS.first of all i'm not aware of your set up.
i'll explain 1 scenario which i did, i have a 2821 router at the H.Q and 20 branches at remote locations. at remote locations i'm using cisco 877 advanced ip services, i'm using EIGRP routing protocol.
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...