How to configure Firewall on CentOS 7 for Zabbix ?

We will open the HTTP and HPTTPS port for Zabbix FrontEnd, and will also add an additional port for Zabbix Server and Zabbix Agent.

If you do not have firewalld on your system, install it using the following command.

Start the firewalld service and enable it to launch everytime at system boot.

Now we will open the HTTP and HTTPS (80 and 443) port, and the port that will be used by the Zabbix Server and Zabbix agent (port 10051 and 10050).

Run the following firewall-cmd commands.

Now reload the firewalld configuration and check the port.

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