How To Install IPtables On CentOS 8/7 RHEL 8/7

In this article, you will learn How To Install IPtables On CentOS 8/7 RHEL 8/7.

FirewallD provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces.

Starting from CentOS 7, iptables replaced by default with FirewallD.

Anyways we can disable the FirewallD and install iptables.

Prerequisites

Make sure if you can login with a root, or other user with sudo privileges.

Disable the FirewallD

Before installing the iptables we need to stop, disable and mask the firewalld service.

Stop the firewalld service:

sudo systemctl stop firewalld

Disable the firewalld service on boot:

sudo systemctl disable firewalld

Mask the firewalld:

sudo systemctl mask --now firewalld

Install IPtables

After the firewalld disabling, we we can install iptables with yum or dnf package manager.
Run:

sudo yum install iptables-services -y

Start and Enable IPtables on Boot

After iptables successfully installation start the iptables:

sudo systemctl start iptables

Then enable iptables on system boot:

sudo systemctl enable iptables

To check the status of the iptables service run:

sudo systemctl status iptables

IPtables Rules File Location

In CentOS 8/7 iptables stores rules configuration in /etc/sysconfig/iptables and /etc/sysconfig/ip6tables directories.

Conclusion

In this tutorial, you lust learned how to disable the firewalld, and Install iptables On CentOS 8/7 RHEL 8/7, and enable iptables service.

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