I am implementing VPN solution at work. I have PIX 515E for the VPN server and Client 4.0.2(b) for the VPN client. When I test from my house or some agencies, it works great. However, there are some agencies that staff can't connect to the PIX. The error message say "The remote peer is no longer responding." I am almost sure that it's firewall issue. So I am about to write some instruction for the agencies so that they can open up proper ports/protocols for our staff. When I sniff packets, I can see UDP/64514, UDP/500, and UDP/4500. What else should I ask for? How should I ask the agencies for the VPN client access to our PIX through their firewalls? Thank you,
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...