Web Server

Kestrel (ASP.NET) Stack Detection

Official Website

Cross-platform web server for ASP.NET Core built with libuv and sockets.

Detection Heuristics & Signature Markers

Our engine inspects multiple observable layers to identify Kestrel (ASP.NET) with verified confidence:

HTTP Response Headers: Matches headers such as "server".

Evidence Limitations & Security Hardening

Production websites frequently implement security hardening to suppress response headers (like Server or X-Powered-By) or minify script bundles. While this may reduce confidence to Medium or require deep DOM inspection, it does not prevent our multi-vector engine from identifying underlying patterns.

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