How to upgrade IIS 3.x to log extended information

[charleychacko]

Looking for a way to log extended information such as referrer, user agent, cookies and host names (reverse DNS lookup) in Microsoft IIS 3.x web servers?

If upgrading to Microsoft IIS 4.x is not an option, you can use an ISAPI filter to extend the log files generated by Microsoft IIS 3.x. An ISAPI filter is a dynamically linked plug-in compatible with Internet Information Server's programming interface that can extend its functionality. Some of the following plug-ins may support Microsoft IIS 1.x, Microsoft IIS 2.x, Personal Web Server 3.x and other ISAPI compatible web servers as well.

If you're using Microsoft IIS 4.x+ or can upgrade to it, the Extended Log Format option can log above mentioned information as well as other data not logged by Microsoft IIS 3.x and lower versions.

WebTrends plug-ins for Microsoft Internet Information Server.
Extends the log files of the Microsoft IIS to include referrer, user agent (browser), unique COOKIE information, reverse DNS lookup data. Also includes features to help web servers with virtual hosting.
FlashStats's FlashLog extension
ISAPI filter to extend IIS, PWS and other ISAPI compatible web server logs to include referrer and user agent information.
Listing #1 : IIS web server log related plug-ins