Article ID: 297795 - View products that this article applies to.
This article was previously published under Q297795
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 7.0 running on Microsoft Windows Server 2008. IIS 7.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
http://www.microsoft.com/technet/security/prodtech/IIS.mspxFor more information about IIS 7.0, visit the following Microsoft Web site:
This step-by-step article demonstrates how to enable reverse Domain Name System (DNS) lookup for Internet Information Services (IIS).
NOTE: Always back up the metabase before you edit it.
To enable reverse DNS lookup on IIS versions 4.0 and later, the EnableReverseDNS metabase entry must be set to TRUE.
When the EnableReverseDNS metabase entry is set to TRUE, the IP address of each Web client that connects to the IIS server is resolved to a DNS name, and the DNS name instead of the Web client IP address is placed in the IIS log files. Enabling reverse DNS also affects what CGI and ISAPI extensions see as a value of the RemoteHost variable.
For additional information about how to back up the registry, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/300672/EN-US/ )HOW TO: Create a Metabase Backup in IIS 5
For additional information about performing reverse DNS lookup, click the article numbers below to view the articles in the Microsoft Knowledge Base:
245574For additional information about restricting site access by IP address or domain name, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/245574/EN-US/ )HOWTO: Configure REMOTE_HOST to Perform a Reverse DNS Lookup in IIS
(http://support.microsoft.com/kb/324066/EN-US/ )HOW TO: Restrict Site Access by IP Address or Domain Name
Article ID: 297795 - Last Review: July 7, 2008 - Revision: 4.2