Https Localhost11501 Verified !!exclusive!!

What does this mean? Is localhost11501 a typo? Is port 11501 special? And most importantly, how can a self-signed, local connection ever be considered "verified" by your browser?

dotnet dev-certs https --trust When an ASP.NET Core app runs on a random port (sometimes 11501), it automatically uses this trusted certificate. Visual Studio or dotnet run will show “Verified” in the browser. If you run a containerized service on port 11501, you can mount the mkcert certificate into the container or use a reverse proxy like Caddy or Traefik that automates local TLS. Part 4: Common Scenarios Where You’ll See “https localhost11501 verified” Scenario A: Local Authentication Emulator (Firebase, Auth0, Keycloak) Many identity providers offer local emulators. Firebase Emulator Suite, for instance, can run on various ports. If you configure it with a trusted certificate, you might see https://localhost:11501 as the token endpoint. Scenario B: Webpack Dev Server with HTTPS Webpack Dev Server (v4+) supports HTTPS via devServer configuration: https localhost11501 verified

https.createServer(options, (req, res) => { res.writeHead(200); res.end('Verified localhost:11501!\n'); }).listen(11501); What does this mean