Here's my issue, I have a 3rd party device that is on the local side of my Cisco ASA 5510 VPN router. This device needs to create a VPN tunnel through the 5510 router to a remote device, my issue is that i only have 1 ip address. I spoke with Cisco level 1 tech support and they stated the only way for the Cisco router to work the way i want it to would be for me to get a 2nd public ip address. This doesn't make any sense to me, i've done this sort of thing with other devices and they had no problem allowing the IPSEC traffic across the device.
I was playing around and think i almost had it configured the way i wanted but for some reason UDP port 500 was changing to port 4.
Does anyone know how to Configure the 5510 to allow the VPN passthrough I require.
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...