Linux 下设置防火墙白名单（RHEL 6 和 CentOS 7）
系统大全为您提供进入Linux 命令行，编辑防火墙规则配置文件 iptablesvi /etc/sysconfig/iptables下面是一个白名单设置的例子：?123456789101112131415161718192021222324252627282930313233<code class="hljs haml"># Firewall configuration written by system-config-securitylevel# Manual customization of this file is not recommended.*filter:INPUT ACCEPT [0:0]:FORWARD ACCEPT [0:0]:OUTPUT ACCEPT [0:0]:RH-Firewall-1-INPUT - [0:0]-N whitelist-A whitelist -s 10.202.106.1 -j ACCEPT-A whitelist -s 10.202.106.2 -j ACCEPT-A whitelist -s 10.202.106.3 -j ACCEPT-A whitelist -s 10.202.106.4 -j ACCEPT-A whitelist -s 10.202.106.5 -j ACCEPT-A whitelist -s 10.202.106.6 -j ACCEPT-A whitelist -s 10.202.106.7 -j ACCEPT-A INPUT -j RH-Firewall-1-INPUT-A FORWARD -j RH-Firewall-1-INPUT-A RH-Firewall-1-INPUT -i lo -j ACCEPT-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT-A RH-Firewall-1-INPUT -p 50 -j ACCEPT-A RH-Firewall-1-INPUT -p 51 -j ACCEPT-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 4750 -j ACCEPT-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j whitelist-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibitedCOMMIT</code>其中设置白名单的部分为：?12345678<code class="hljs haml"><code class="hljs lasso">-N whitelist-A whitelist -s 10.202.106.1 -j ACCEPT-A whitelist -s 10.202.106.2 -j ACCEPT-A whitelist -s 10.202.106.3 -j ACCEPT-A whitelist -s 10.202.106.4 -j ACCEPT-A whitelist -s 10.202.106.5 -j ACCEPT-A whitelist -s 10.202.106.6 -j ACCEPT-A whitelist -s 10.202.106.7 -j ACCEPT</code></code>使用白名单规则使用 j 参数指定：?1<code class="hljs haml"><code class="hljs lasso"><code class="hljs lasso">-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j whitelist</code></code></code>经验总结： 以上就是系统大全给大家介绍的如何使的方法都有一定的了解了吧，好了，如果大家还想了解更多的资讯，那就赶紧点击系统大全官网吧。本文来自系统大全http://www.win7cn.com/如需转载请注明！推荐：win7纯净版
