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How to enable iptables Firewall in CentOS 7.00.This article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and easy way.

CentOS 7.0,enable iptables Firewall

CentOS 7.0 uses firewall as the firewall by default, which is changed to iptables firewall here.

1. Close firewall:

Systemctl stop firewalld.service # stop firewall

Systemctl disable firewalld.service # prevents firewall from booting

2. Install iptables firewall

Yum install iptables-services # installation

Vi / etc/sysconfig/iptables # Editing Firewall profile

# Firewall configuration written by system-config-firewall

# Manual customization of this file is not recommended.

* filter

: INPUT ACCEPT [0:0]

: FORWARD ACCEPT [0:0]

: OUTPUT ACCEPT [0:0]

-An INPUT-m state-- state ESTABLISHED,RELATED-j ACCEPT

-An INPUT-p icmp-j ACCEPT

-An INPUT-I lo-j ACCEPT

-An INPUT-m state-- state NEW-m tcp-p tcp-- dport 22-j ACCEPT

-An INPUT-m state-- state NEW-m tcp-p tcp-- dport 80-j ACCEPT

-An INPUT-m state-- state NEW-m tcp-p tcp-- dport 3306-j ACCEPT

-An INPUT-j REJECT-- reject-with icmp-host-prohibited

-A FORWARD-j REJECT-- reject-with icmp-host-prohibited

COMMIT

: wq! # Save exit

Systemctl restart iptables.service # finally restart the firewall to make the configuration effective

Systemctl enable iptables.service # set the firewall to boot

This is the answer to the question about how to enable iptables firewall in CentOS 7.0. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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