Does anyone know how to accomplish this? I've got three sites with 1720 ADSL/IPSEC (IOS 12.2) bundles and additional ISDN WICs fitted. We can get the ADSL to form a site to site VPN easily, but how to get point to point to allow for ISDN backup?
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...