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Linux服務器如何開放端口

劉柏宏2年前15瀏覽0評論

Linux服務器如何開放端口?

打開配置文件

命令代碼

[root@localhost ~]# vi /etc/sysconfig/iptables

正確的配置文件

配置代碼

# 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

配置[*]通配代碼

-A INPUT -m state –state NEW -m tcp -p tcp –dport * -j ACCEPT

注意點:新開放的端口一定要在端口22后面

重啟防火墻使配置生效

命令代碼

[root@localhost ~]# /etc/init.d/iptables restart

其它

查看開放端口

命令代碼

[root@localhost ~]# /etc/init.d/iptables status

關閉防火墻

命令代碼

[root@localhost ~]# /etc/init.d/iptables stop