How do I find out which process is listening on a TCP

To identify which process is listening on a TCP port in Linux, use the netstat or ss commands.

1. Using netstat:
   bash

   Copy code

   sudo netstat -tuln


   This shows listening ports. To include process details, use:

   bash

   Copy code

   sudo netstat -tulnp

2. Using ss (faster alternative):
   bash

   Copy code

   sudo ss -tuln


   To get process information with ss, run:

   bash

   Copy code

   sudo ss -tulnp


These commands show the PID and associated program. Use ps to identify the process name by PID for more details. This helps track down services listening on specific TCP ports.