Iptables service for CentOS 7

Iptables service for CentOS 7

By default, CentOS 7 uses firewalld to manage iptables rules. Because firewall rules are rarely changed, it doesn't matter if they are not moved. But it is used to being a devil. Unlike before, it is always a bad habit.

Systemctl disable firewalld
Yum remove firewalld-y

Use the following methods to restore the original habits and solve the problem of iptables startup.

Yum install iptables-services-y
Systemctl enable iptables

In this case, the iptables service will start up and automatically import rules from the/etc/sysconfig/iptables file.

This is required for the/etc/init. d/iptables save command to take effect.

Cp/usr/libexec/iptables. init/etc/init. d/iptables
/Etc/init. d/iptables save

The chkconfig iptables command automatically redirects to sytemctl enable iptables.

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Iptables examples

Iptables-packet filtering (Network Layer) Firewall

Linux Firewall iptables

Iptables + L7 + Squid implements a complete software firewall

Basic use of iptables backup, recovery, and firewall scripts

Detailed description of firewall iptables usage rules in Linux

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