Cannot connect to VPN on PIX 501 without public IP Address
I am having an issue connecting to our PIX at work from computers that are NATed. For example, if I try to connect to our PIX with the Cisco VPN client from my home behind my router, it will not connect, and gives me an error 412 saying it cannot reach the destination. However, if I plug my computer directly into my cable modem, and obtain a public IP Address, I can connect without problems. I have been able to duplicate this at other locations. In each location, the VPN passthrough on the home office router is enabled. Our PIX 501 sits behind a Siemens router with all ports and protocols forwarded to it.
We have some clients that I connect to via VPN that have PIX 501 and I can get to them from within my home office just fine. I'm not sure that it's at the home office end.
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...