I'm sure this has been discussed before but I've searched and not found it. My problem is classic. I have a broadband router (806) that is providing NAT. However, I also host an inside web server that needs to be publically and internally accessable. My problem is that when the web address is resolved for inside clients, the DNS server provides the outside IP address. The clients then are routed from Inside-Outside-Inside. I'm not sure exactly what breaks in the process but it doesn't work. I've also tried using two external IPs. (One Outside IP is used by clients to go out a different IP for the inbound web service.) Inside/Outside DNS isn't an option. If I can get it working I also want to use CBAC in both directions.
I have the same problem, but I can't use the HOSTS file since I have a couple of laptops which run both inside and outside and need to be able to connect to the mailserver. This is an easy problem on a PIX firewall with the alias command, but the 806 doesn't seem to have that avalible.
I would try the alias command. I just had the same issue on a pix 515. The alias cammand mapped my internal hosts and the DNS requests didn't go out. The one problem I still have is that now the Pix wants to reply to the name locally so I keep getting duplicate address messages when hosts do a netbios lookup.
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...