IIS Security: How to Harden a Windows IIS Web Server in 10 Steps | UpGuard

This article outlines ten practical steps to secure Microsoft IIS (including IIS 8.5 and 10), covering recommendations such as removing unneeded modules, properly configuring user/group accounts, restricting CGI/ISAPI, enabling request filtering and dynamic IP restrictions, using URL authorization and encrypted forms-based authentication, running application pools with unique low-privilege identities, isolating web applications, and keeping IIS patched. It emphasizes continuous monitoring and enforcement of these configurations using UpGuard to detect misconfigurations and ensure consistent patching and compliance.