I have a remote location that connects to the central office via a private circuit (DS3). In the event this connection goes down, is it conceivable to failover to a IPSEC VPN tunnel using an internet ethernet interface on the router? The central site also has Cisco 3005 VPN concentrators. Just looking for general feasibility and maybe a pointer to some sample configurations.
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...
[toc:faq]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 and UDP are I...