Hi. I am currently trying to connect to an external site from home via PPTP VPN using standard windows VPN client. I have a cisco 827. I have allowed port 1723 and GRE through the acl on the cisco. The VPN is hanging on the authenticating phase. I have used a packet monitoring tool to verify that traffic is being sent and received by my PC. I can see the PPTP traffic beign sent and received, and also am getting alot of LCP configuration requests being sent/received. I have treid the VPN connection using a different router (non cisco) and it works fine.
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...