IISGuard is an ISAPI add-on for Internet Information Server (IIS5, IIS5.1, IIS6) that allows you to monitor and analyze requests in real-time from a web interface. You can monitor all types of requersts, or limit it to specific file extensions. IISGuard can help you detect potential problems caused by scripts, malicious connection attempts and other issues. The IISGuard web interface runs as an independent web server and is available via port 85.

The license of this software is Free Trial Software, the price is $99.00, you can free download and get a free trial.