I have established an IPSEC tunnel with two Cisco 2621 routers. Clients over the Internet are able to dial into the MCU server, which is behind one of the Cisco 2621 routers configured with NAT but the MCU is not able to call the client. The MCU is able to call any server or client on the LAN however it is not able to call anyone passed the router configured with NAT. Could anyone who has experience with NAT and IPSEC help me out?
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...