When you see a request for https://localhost:11501 , it usually means a local background service is trying to link your browser to a hardware device (like a digital signature token) or a secure database. Key Use Cases
Any malicious software already running inside your computer can theoretically send requests to 11501 . Always download tools like AltServer or developer packages directly from their official, verified repositories to prevent local cross-application exploits.
Sometimes local security software or internal firewalls block traffic to non-standard ports. Ensure your local firewall rules permit traffic over port 11501 for loopback development.
Use localhost11501 with a tunneling tool (ngrok, localtunnel) to test webhooks from Stripe, GitHub, or Twilio. localhost11501
Sometimes, two different programs try to use port 11501 at the same time. This leads to a "Port already in use" error.
Enter http://localhost:11501 into the search bar.
Some CI runners (Jenkins, GitLab CI) allow port forwarding for debugging. Map a remote port 11501 to localhost11501 on your machine. When you see a request for https://localhost:11501 ,
Instant password protection and inspectable HTTP traffic logs lt --port 11501 Completely free, open-source NodeJS tool
The enigma of localhost:11501 remains partially unsolved, as its purpose and significance depend on the specific context in which it appears. While it might seem like a mysterious or suspicious address, it's essential to consider the various possibilities and investigate further to determine the cause.
2. Local Biometric Scanner Integration (IDEMIA and Morpho Drivers) Sometimes, two different programs try to use port
Since I cannot see your screen, here are the commands you can run to generate a useful report about the activity on this port.
This will reveal the PID (Process Identifier) using the port. You can then terminate it via Task Manager. sudo lsof -i :11501 Use code with caution.