Https Localhost 11501 Url -

No process is listening on port 11501, or a firewall is blocking it.

Self-signed certificate not trusted by your operating system/browser.

so host header equals to localhost col 4200 within double quotes right hit enter. and just copy any of the two versions i'm copyin... Awais Mirza What is localhost and how does 127.0.0.1 work? - IONOS 14 Jan 2026 —

Even so, you should never rely on that exception for automated testing or CI/CD. Instead, always use a locally trusted CA (mkcert) or add your self-signed certificate to the system/browser trust store. https localhost 11501 url

Since it's not a standard port like 80 or 8080, 11501 is almost certainly chosen by a developer for a specific project. It's a high-numbered port which, unlike privileged ports ( 0-1024 ), doesn't require administrator permissions to run a server on. You'll frequently see developers using non-standard ports like 3000 , 4200 , 8080 , 5000 , or 11501 to avoid conflicts with other local services.

Run with node server.js and visit the URL.

location / root /path/to/your/project; index index.html index.htm; No process is listening on port 11501, or

Caddy automatically provisions real, trusted certificates from Let’s Encrypt for public domains, but it also supports local development with trusted local certs. Configure Caddyfile :

Some firewalls block high ports for loopback traffic, especially on Windows. Temporarily disable Windows Defender Firewall or add an inbound rule for port 11501 to test.

When you type https://localhost:11501 into your browser’s address bar and press Enter, several things happen: and just copy any of the two versions i'm copyin

If you’d like, I can write a generic titled: “Demystifying https://localhost:11501 – local development with custom ports and SSL”

Update all resource URLs to use HTTPS or relative paths. For local development, consider using a tool like localhost.run or a proxy.

: Navigate to your project's root directory, or a dedicated ssl folder for your certificates. Then, run:

What and web browser are you using for development?

Demystifying https://localhost:11501 : A Guide to Securing Local Services