Linux 添加 iptables 防火墙规则

添加规则

vim /etc/sysconfig/iptables

开通80端口

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

ACCEPT一定要放置在REJECT上方，否则不生效。

# 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

批量开通

-A INPUT -m state --state NEW -m tcp -p tcp --dport 20880:20890 -j ACCEPT

重启iptables

/etc/init.d/iptables restart

添加在/etc/init.d下的脚本可使用service执行

service iptables restart