linux配置防火墙，开启80端口、3306端口的方法

古城微笑少年丶 2023-07-10 05:17 19阅读 0赞

大家都知道服务器里的一些端口和防火墙之类的，在使用过程中能够起到很重要的作用，这里整理了一些关于配置防火墙，开启80端口、3306端口  
vi /etc/sysconfig/iptables  
\-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT（允许80端口通过防火墙）  
\-A INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT（允许3306端口通过防火墙）  
特别提示：很多网友把这两条规则添加到防火墙配置的最后一行，导致防火墙启动失败，正确的应该是添加到默认的22端口这条规则的下面  
添加好之后防火墙规则如下所示：  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#  
\#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  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#  
/etc/init.d/iptables restart \#最后重启防火墙使配置生效

2、关闭SELINUX  
vi /etc/selinux/config  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#  
\#SELINUX=enforcing \#注释掉  
\#SELINUXTYPE=targeted \#注释掉  
SELINUX=disabled \#增加  
:wq \#保存，关闭  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#  
shutdown -r now \#重启系统  
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![在这里插入图片描述][20200229200154813.png]

[20200229200154813.png]: https://img-blog.csdnimg.cn/20200229200154813.png