Re: ASA VPN Interface should be outside interface?
You can terminate the vpn on any interface. Let's take the following example:
Router (Remote n/w 192.168.1.1/24)
Let's say that we have established a L2L tunnel with a router and the network behind the router to which we want to talk is 192.168.1.1/24.
Now, on the ASA we have the default route as follows:
route outside 0 0 18.104.22.168
Now, if the cryptomap is applied on outside2 interface and the tunnel gets initiated from the remote router, the packet would reach the firewall, but when the reply goes, it checks the routing table and sends the packet towards outside interface and it gets dropped. So, we need to have a specific route fro the remote n/w as follows to make it work:
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...