On our two sites, we are using PIX 515E and from these sites, one having remote access VPN server.We have no problem to connect remote vpn from public network,but could not connect from other site which is behind the PIX.
there is only PAT is happening from inside network.
Following error comes always " Error 721: The remote computer is not responding."
We also did some packet capturing at destination pix between source (remote client IP:22.214.171.124) and destination IP (remote VPN Server: 126.96.36.199) but we did not find anything wrong .
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...