Web Servers and Log Formats
There are two major types of web servers that serve over 80% of all websites on the Internet. The first one is an open-source solution, Apache Web Server by Apache Foundation. That server stores logs in the Apache NSCA Extended Log Format.
The second place in the coverage for the server segment is held by IIS by Microsoft. It can store visitor logs in the formats: Microsoft IIS Log Format, NSCA Common Log Format, ODBC Logging, W3C Extended Log File Format. How to configure IIS for maintaining logs in the required format, and where to find IIS webserver logfile.