From Command-line Interface (CLI), by using the commands iptables –I Input.

It can be commonly configured in either of the following ways: Note: For IPv6 you need to start & enable ip6tables, as iptables only support IPv4 and set IPv6 firewall configuration within /etc/sysconfig/ip6tables file.ģ. Once the installation process gets completed, enable the iptables services to start automatically at boot by using the following commands: $ systemctl enable iptables To install the iptables-services package from CentOS follow the below command (You can skip if you have already installed it). Steps to Install and configure iptables on centOS7ġ.

Main PID: 7411 (code=exited, status=0/SUCCESS) Aug 17 11:02:10 svr10 systemd: Started firewalld - dynamic firewall daemon.Īug 17 11:09:19 svr10 systemd: Stopping firewalld - dynamic firewall daemon.Īug 17 11:09:20 svr10 systemd: Stopped firewalld - dynamic firewall daemon.

To mask or disable firewalld you can use the below command: $ sudo systemctl mask firewalldĪfter completing check the status of FirewallD: $ sudo systemctl status firewalld With output:Īctive: inactive (dead) since Tue 11:09:20 EST 60s ago This is because firewalld is a replacement of iptables, therefore only one should run at a time. In order to install iptables in centos 7, you need to either use firewall-cmd commands or disable firewalld and then enable iptables.

Centos iptables