Disable open ports

Updated Mar 11, 2022 ·

Check open ports

Use the netstat command to see the open ports:

netstat -an | grep -w LISTEN 

Once we have the list of open ports, determine what they are use for. To do this, check the /etc/services file. The command below is applicable on Ubuntu systems.

Ports used by Kubernetes

Kubernetes requires specific ports for communication between its components.