: localhost is a hostname that refers to the local machine. When you access http://localhost:11501 , you're essentially making a request to your own machine. This is commonly used for testing web applications or services without making them publicly available.
Developers use high-numbered ports like 11501 to host internal APIs, microservices, or browser extension backends away from standard traffic. Troubleshooting "Connection Refused" http //localhost 11501
Firewalls and antivirus software sometimes block high-range ports like 11501, viewing them as potential security risks. localhost:11501 : localhost is a hostname that refers to the local machine
If you can tell me what software you are trying to use, I can give you more specific instructions. http //localhost 11501