When working with HTTPS in development environments, you may encounter issues, such as:
Configure your web server or application framework (Node.js, Docker, Nginx, or .NET) to load these two files and point to port 11501 . Once restarted, navigating to https://localhost:11501 will show a green lock icon and read as verified. Method 2: Create Self-Signed Certificates via OpenSSL
Unlike HTTP and HTTPS which are protocols, localhost is a hostname. Remember that the website domain name is what follows the http... freeCodeCamp
: When accessing https://localhost:11501 for the first time, your browser may display a warning message indicating that the connection is not secure or that the site's identity cannot be verified. This usually happens when there's an issue with the certificate. https localhost11501 verified
: This indicates that the traffic sent between your browser and the service running on port 11501 is encrypted using Transport Layer Security (TLS/SSL). Common Applications Using Port 11501
Would you like a working Node.js script that generates a trusted cert for localhost:11501 and installs it on your system?
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. When working with HTTPS in development environments, you
Install it (e.g., brew install mkcert on Mac or via Chocolatey on Windows).
If the browser says the certificate is invalid, ensure you haven't recently cleared your SSL state or updated your browser, which sometimes requires re-trusting the local CA.
The page will automatically refresh and let you access port 11501. Mozilla Firefox Click the button on the warning page. Select Accept the Risk and Continue . Method 2: Trust Your Framework's Dev Certificate Remember that the website domain name is what
Run this command to create and trust a new local certificate: dotnet dev-certs https --trust Use code with caution.
So the next time you encounter https://localhost:11501 – verified and ready – you’ll know exactly how it works, why it’s there, and what it took to earn that small padlock icon. And that knowledge is the first step toward building safer, more reliable web applications.