snort怎么检测dhcp泛洪攻击
时间: 2023-09-10 10:12:37 浏览: 111
snort的入侵检测
Snort可以使用以下规则进行检测DHCP泛洪攻击:
```
alert dhcp $HOME_NET any -> $HOME_NET any (msg:"DHCP Discover Flooding"; dhcp:opcode=1; threshold: type limit, track by_src, count 50, seconds 10; sid:1000001; rev:1;)
alert dhcp $HOME_NET any -> $HOME_NET any (msg:"DHCP Offer Flooding"; dhcp:opcode=2; threshold: type limit, track by_src, count 50, seconds 10; sid:1000002; rev:1;)
alert dhcp $HOME_NET any -> $HOME_NET any (msg:"DHCP Request Flooding"; dhcp:opcode=3; threshold: type limit, track by_src, count 50, seconds 10; sid:1000003; rev:1;)
alert dhcp $HOME_NET any -> $HOME_NET any (msg:"DHCP ACK Flooding"; dhcp:opcode=5; threshold: type limit, track by_src, count 50, seconds 10; sid:1000004; rev:1;)
alert dhcp $HOME_NET any -> $HOME_NET any (msg:"DHCP NAK Flooding"; dhcp:opcode=6; threshold: type limit, track by_src, count 50, seconds 10; sid:1000005; rev:1;)
```
这些规则会检测DHCP包的不同操作码(opcode)是否在特定时间内达到一个阈值,从而确定是否有DHCP泛洪攻击发生。当检测到DHCP泛洪攻击时,Snort会生成相应的警报。
阅读全文