centos7下部署iptables环境纪录（关闭默认的firewalle）

[root@localhost ~]# systemctl stop firewalld.service            //停止firewall
[root@localhost ~]# systemctl disable firewalld.service        //禁止firewall开机启动

[root@localhost ~]# yum install iptables-services            //安装
[root@localhost ~]# vim /etc/sysconfig/iptables              //编辑防火墙配置文件
# 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]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

[root@localhost ~]# systemctl restart iptables.service                  //最后重启防火墙使配置生效
[root@localhost ~]# systemctl enable iptables.service                  //设置防火墙开机启动

[root@localhost ~]# iptables -L                 //查看防火墙规则,默认的是－t filter，如果是nat表查看，即iptables －t nat -L

[root@localhost ~]# vim /etc/selinux/config
#SELINUX=enforcing           //注释掉
#SELINUXTYPE=targeted           //注释掉
SELINUX=disabled              //增加


[root@localhost ~]# setenforce 0       //使配置立即生效