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