I have a web site residing in dmz1. Public IP addresses are assigned to the servers in dmz1. From my inside host I can access the web site by typing in www.whatever.com for the URL.
I want to change my IP addresses to private IPs in dmz1. When I do this my inside host can no longer access the web site by typing in www.whatever.com. They now have to treat the site as a intranet site by typing in the IP address.
Why is this happening and how can I use private IPs while still allowing internal host to type in www.whatever.com to access the web site.
Two ways you can approach this problem. The first one is to setup split DNS, one for your internal users and one for the outside world. The second option is to configure the alias command. The alias command changes the IP address of the webserver in the DNS respons to its actual ip address. Cisco's website has an example configuration for alias at:
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...