CentOS7中关闭firewall,并使用iptables管理防火墙

背景描述

在使用Docker时,启用centos7默认的firewall,启动端口映射时,防火墙规则不生效。docker默认使用了iptables防火墙机制。所以需要关闭firewall使用iptables解决。

 

1.关闭默认的firewall防火墙

systemctl stop firewalld.service 关闭防火墙
systemctl disable firewalld.service 关闭开机启动

  

2.开启iptables

yum install iptables (根据centOS7的版本和内核,有些版本已经装过,可以跳过此命令)
yum install iptables-services
service iptables restart
chkconfig iptables on或者systemctl enable iptables.service开机自启

  

3.编辑防火墙文件(开启了21,22,80,3306端口)

vim /etc/sysconfig/iptables

# sampleconfiguration for iptables service  
# # you can edit thismanually or use system-config-firewall  
# # please do not askus 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 21 -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 80 -j ACCEPT  
-A INPUT -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT  
-A INPUT -j REJECT --reject-with icmp-host-prohibited  
-A FORWARD -j REJECT --reject-with icmp-host-prohibited  
COMMIT  

  

4.添加防火墙命令

/sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT

 

5.查看本机关于IPTABLES的设置情况

iptables -L -n

  

posted @ 2017-03-31 18:35  雪之谷  阅读(11680)  评论(0编辑  收藏