Check Linux Firewall Status Quick Guide

In Linux systems, you can use the following command to check if the firewall is enabled:

1. Check the status of iptables: iptables is one of the commonly used firewall tools in Linux system. You can use the following command to check the status of iptables:
2. Please list the IP tables.
3. If there is a list of rules in the output, it means the firewall is turned on. If there is no output, it means the firewall is not turned on.
4. Check the status of ufw: ufw is a commonly used firewall tool in Ubuntu systems. You can use the following command to view the status of ufw:
5. Check the status of the Uncomplicated Firewall by running the command “sudo ufw status.”
6. If the output status shows “active,” it means the ufw firewall is activated. If the status shows “inactive,” it means the ufw firewall is not activated.
7. To check the status of firewalld, a commonly used firewall tool in CentOS and Fedora systems, you can use the following command.
8. Check the status of firewalld service using systemctl command.
9. If the output shows “active (running)” status, it means that the firewalld firewall has been enabled. If the status is “inactive (dead)”, then the firewalld firewall is not enabled.

The above commands can be used to check if commonly used firewall tools in a Linux system are enabled. Depending on the system and firewall tool being used, choose the appropriate command to perform the check.