Re: finding which rule

[James Lay <jlay () slave-tothe-box net>]

On 2014-07-24 13:02, Richard Smollett wrote:
> Im getting a lot of alerts that look like this.
>
> [**] [129:20:1] Snort Alert [129:20:1] [**] [Classification:
> Potentially Bad Traffic] [Priority: 2] 07/24-14:15:35.196146
> 172.28.61.104:22 -> 172.28.61.88:20309 TCP TTL:64 TOS:0x10 ID:59076
> IpLen:20 DgmLen:104 DF ***AP*** Seq: 0x8055FA2A Ack: 0x450C8A09 Win:
> 0x545 TcpLen: 20
>
>  How do I go about finding the rule that generated this alert?

 From README.stream5:

Alerts
======
Stream5 uses generator ID 129.  It is capable of alerting on 10
anomalies, all of which relate to TCP anomalies.  There are no
anomaly detection capabilities for UDP or ICMP.  Check etc/gen-msg.map
for the current list of GID 129 alerts.

and from gen-msg.map:

129 || 20 || stream5: TCP session without 3-way handshake

James

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