iptables 很强大,但是也很复杂,而且搜索的有关文章都长篇大论,在这里收集下简单的配置范例,没有复杂的理论:
基础
-A 从后面添加
-I 从前面插入
-D 删除规则 :
iptables -L INPUT –line-numbers 列出指定链的规则,从中查看需要处理的规则编号NUM
iptables -D INPUT 4 删除指定编号的规则
1.1.1.0/8 指1.*.*.*的IP地址
1.1.0.0/16 指1.1.*.*的IP地址
1.1.1.0/24 指1.1.1.*的IP地址
0.0.0.0/0 指所有IP地址
1.对入站进行配置: 可用操作: DROP:丢弃,不返回任何信息 ACCEPT:接受入站 REJECT:拒绝,返回拒绝消息 iptables -A INPUT -s 0.0.0.0/0 -d 0.0.0.0/0 -p tcp/udp/all --dport 80:81 --sport 0:65535 -j ACCEPT /REJECT /DROP 对以下条件的 入站连接: 来源IP地址:0.0.0.0/0 目标IP地址:0.0.0.0/0 协议:tcp/udp/all 所连接的目标端口:80至81 来源端口:0至65535 进行以下操作: ACCEPT/REJECT/DROP
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