ASP.NET Web.Config: Redirects, Security, and URL Rewriting Explained

In ASP.NET applications, the Web.config file is the heart of configuration. It allows us to define application settings, connection strings, error handling, session timeouts, security rules, and even URL rewriting without touching our C# backend code.

In this blog, we’ll explore:

  • The concept of Web.config

  • Redirect usage through Web.config

  • Page protection and security settings

  • URL rewriting for clean SEO-friendly URLs

  • Frontend usages (single name, double name, third parameter, redirects)

And finally, we’ll go line by line through a real-world Web.config example.