[updated] | Localhost-11501

Security software flags the unusual traffic on port 11501 as suspicious and drops the network packets.

Set the PORT environment variable before starting:

Tools like Nginx, Caddy, or Apache often proxy requests from a specific port to backend services. You might see configurations like: localhost-11501

: Certain enterprise middleware and administration tools bind to unique 5-digit ports above 10000 to minimize conflict with consumer software.

When an application spins up a local server on port 11501, it typically belongs to one of three categories: Security software flags the unusual traffic on port

If the direct IP works perfectly, open your system hosts file (located at C:\Windows\System32\drivers\etc\hosts on Windows or /etc/hosts on Mac/Linux) and ensure this line is not commented out: 127.0.0.1 localhost Use code with caution. Step 4: Configure Local Firewalls

To fix the issue, you must first understand how these network components interact. When an application spins up a local server

One might think that localhost is inherently safe. However, vulnerabilities can still arise.

Once you have the PID (the number in the last column), you can find the application name: powershell tasklist /fi "pid eq YOUR_PID" Use code with caution. On macOS and Linux Open your terminal and use the lsof command: lsof -i :11501 Use code with caution.