How to Check Open Ports in Ubuntu

1 year ago
Benjamin Taylor
1 minute

You can use the following command to check if a port is in use:

  1. Open the terminal and enter the following command: use the netstat command.
netstat -tuln

This command will display the ports currently being listened to on the system along with the corresponding programs.

  1. To use the lsof command, open the terminal and enter the following command:
sudo lsof -i -P -n | grep LISTEN

This command displays the ports and corresponding programs that are currently being listened to on the system.

  1. To use the ss command:
    Open the terminal and type the following command:
ss -tuln

This command can also list the ports currently being listened to in the system and the corresponding programs.

The above command can be used to check which ports are currently in use by programs on the system. It will display the program that is using each occupied port.

bannerAds