CentOS 7关闭firewalld启用iptables

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#centos #iptables #防火墙

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本文介绍如何在CentOS7中停用firewalld并启用iptables。通过systemctl命令完成firewalld的关闭及iptables的安装与启动，并展示了iptables的基本配置。

在CentOS7中，防火墙iptables被firewalld取代，本文将介绍，如果采用systemctl关闭firewalld，开启iptables。

1、关闭firewalld

systemctl stop firewalld
systemctl disable firewalld
systemctl status firewalld

2、开启iptables

yum install -y iptables-services
systemctl enable iptables
systemctl start iptables
systemctl status iptables

这样，iptables的命令就可以使用了

-bash-4.2# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     icmp --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     tcp  --  anywhere             anywhere             state NEW tcp dpt:ssh
ACCEPT     tcp  --  anywhere             anywhere             state NEW tcp dpt:http
ACCEPT     tcp  --  anywhere             anywhere             state NEW tcp dpt:27017
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

-bash-4.2# service iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  确定  ]