Going from a higher security level to lower security level
Is there a way in Cisco Pix to go from a higer security level to a lower security level without using static nat. I have an application that does not work with NAT. It needs to go from and DMZ_ZONE security level 20 to Internal_Network security level 100. I looked at using nat 0 command but I do not think it will work for me.
Re: Going from a higher security level to lower security level
Is the server on the DMZ or on the inside?
If it's on the DMZ, and your users are on the inside, then are you saying the server can't handle it if the users packets are NAT'd? Then you could use nat 0 with an access-list, something like the following (assuming your DMZ server is 10.2.2.2 and your inside subnet is 10.1.1.0/24):
access-list nonat permit ip 10.1.1.0 255.255.255.0 host 10.2.2.2
nat (inside) 0 access-list nonat
If the server is on the inside and your users are on the DMZ, then just create a static to itself like:
and applied access-list to it but I am still having issues with the traffic. I am able to telnet to the ports from the DMZ tto Inside but can not establish a connection. Do you know how can I troubleshoot this further.
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...