Had configured a IPSEC/GRE tunnel on the router which comes with the IP of 10.0.0.x. This tunnel is supposed to be able to access the DMZ configured (IP 172.25.25.x) on the firewall but currently still not able to. Questions:
a. How I can allow traffic to flow from the tunnel (i.e. 10.0.0.x) on the router to the DMZ machine? Had added a route on the router to point any traffic for 172.25.25.0 network to the firewall but it does not work. Also did a traceroute and found that the traffic keeps going to the internet instead of the firewall (a default route is configured to go to the internet).
b. I had removed all the NAT/PAT on the firewall so that ALL traffic can flow in and out of DMZ without the need of translation. Currently, all the traffic still does not flow through at all and there are error logs about "no translation group" happening on the firewall. Any ideas how to make the traffic free flow in and out of the DMZ?
Any help and advise on the above are greatly appreciated.
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...