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Enable firewalld in Centos 7 How to do it

This article will guide you on steps to enable firewalld on #centos 7 servers for our customers. The firewall is one of the most important features of webservers. The #firewalld supports both IPv4 and IPv6 #firewall #settings.

Never run the iptables service and FirewallD service at the same time! The #iptables service is now provided by a separate package called iptables-services: Stop and disable the firewalld service first. # systemctl stop firewalld.

The firewalld daemon manages groups of #rules using entities called "zones". Zones are basically sets of rules dictating what traffic should be allowed depending on the level of trust you have in the networks your #computer is connected to.

To use FirewallD:

1. Installing and Managing FirewallD.

2. To start the service and enable FirewallD on boot: sudo systemctl start firewalld sudo systemctl enable firewalld.

3. Check the firewall status.

4. To view the status of the FirewallD daemon: sudo systemctl status firewalld.

5. To reload a FirewallD configuration: sudo firewall-cmd --reload.

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