Linux 服务器如何开放端口 配置防火墙
2018-05-27 · 百度认证:青岛四海通达电子科技有限公司官方账号
打开配置文件
[root@localhost ~]# vi /etc/sysconfig/iptables
- 正确的配置文件
# 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 -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
-A INPUT -m state –state NEW -m tcp -p tcp –dport * -j ACCEPT
- 注意点:新开放的端口一定要在端口22后面
- 重启防火墙使配置生效
[root@localhost ~]# /etc/init.d/iptables restart
- 其它
- 查看开放端口
[root@localhost ~]# /etc/init.d/iptables status
- 关闭防火墙
[root@localhost ~]# /etc/init.d/iptables stop
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