centos开启nginx服务成功，却无法访问。没有开启80端口。centos配置防火墙 开启80端口

时间：2023-03-08 16:00:02

Linux配置防火墙 开启80端口 
编辑配置文件/etc/sysconfig/iptables

[root@weixinht ~]# vim /etc/sysconfig/iptables 

    1 # Firewall configuration written by system-config-firewall

      2 # Manual customization of this file is not recommended.

      3 *filter

      4 :INPUT ACCEPT [0:0]

      5 :FORWARD ACCEPT [0:0]

      6 :OUTPUT ACCEPT [0:0]

      7 -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

      8 -A INPUT -p icmp -j ACCEPT

      9 -A INPUT -i lo -j ACCEPT

     10 -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT

     11
12 -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

     13

     14 -A INPUT -j REJECT --reject-with icmp-host-prohibited

     15 -A INPUT -j REJECT --reject-with icmp-host-prohibited

     16 -A FORWARD -j REJECT --reject-with icmp-host-prohibited

     17 COMMIT

修改的部分： 
在第10行22端口规则的下面增加 80端口规则 
编辑时直接y复制一行再p粘贴， 22改为80

/etc/init.d/iptables restart

重启防火墙使配置生效

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