CentOS 7中使用iptables
1、关闭firewall
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
2、安装iptables防火墙
#安装
yum install iptables-services
#安装 yum install iptables-services
3、编辑防火墙配置文件
vim /etc/sysconfig/iptables
显示:
# sample configuration for iptables service # you can edit this manually or use system-config-firewall # please do not ask us to add additional ports/services to this default configuration *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 21 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 20 -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
:wq! #保存退出
systemctl restart iptables.service #最后重启防火墙使配置生效 systemctl enable iptables.service #设置防火墙开机启动
4、关闭SELINUX
vim /etc/selinux/config
#SELINUX=enforcing #注释掉
#SELINUXTYPE=targeted #注释掉
SELINUX=disabled #增加
:wq! #保存退出
setenforce 0 #使配置立即生效
更多iptables相关教程见以下内容:
CentOS 7.0关闭默认防火墙启用iptables防火墙 http://www.linuxidc.com/Linux/2015-05/117473.htm
Iptables工作原理使用详解 http://www.linuxidc.com/Linux/2016-09/134945.htm
Ubuntu 14.04 配置iptables防火墙 http://www.linuxidc.com/Linux/2017-02/140556.htm
Linux下编译安装iptables http://www.linuxidc.com/Linux/2017-04/142615.htm
iptables的备份、恢复及防火墙脚本的基本使用 http://www.linuxidc.com/Linux/2013-08/88535.htm
Iptables工作原理使用详解 http://www.linuxidc.com/Linux/2016-09/134945.htm
CentOS7下iptables配置过程 http://www.linuxidc.com/Linux/2017-01/139622.htm
Linux下iptables防火墙设置 http://www.linuxidc.com/Linux/2015-10/123843.htm
Linux防火墙iptables详解 http://www.linuxidc.com/Linux/2016-12/138474.htm
本文永久更新链接地址:http://www.linuxidc.com/Linux/2017-08/146083.htm