Enable iptables firewall in CentOS 7

Enable iptables firewall in CentOS 7

In the latestIn CentOS 7 linux, the default firewall is changed to firewalld, replacing the previous iptables firewall. How can I enable the iptrables firewall again? This article will show you how to delete existingFirewalld firewall? How to installIptables Firewall:

Disable firewalld firewall in CentOS 7

First, stop the firewalld service and enter the following command:

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$ Sudo systemctl stop firewalld. service

Disable the firewalld service from automatically starting when the system starts. Enter the following command:

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$ Sudo systemctl disable firewalld. server

If you will not use the firewalld service in the future, you can directly uninstall it and use the following command:

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$ Sudo yum remove firewalld-y

Install iptables firewall in CentOS 7

To install the iptables package, run the following command:

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$ Sudo yum install iptables-services

Set the iptables Firewall Service to automatically start when it starts up. Enter the following command:

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$ Sudo systemctl enable iptables

If you want to use/etc/init. d/iptables save command to save the modified firewall policy. Enter the following command to save iptables. the init script overwrites the script after iptables is installed. Enter the following command:

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$ Sudo/usr/libexec/iptables. init/etc/init. d/iptables

In this case, you can run the/etc/init. d/iptables save command.

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$ Sudo/etc/init. d/iptables save