[Snort-devel] SNORT Alert Messages

Marcin Dulak marcin.dulak at gmail.com
Sat Jun 9 07:06:03 EDT 2018


On Sat, Jun 9, 2018 at 11:24 AM, İzzettin Erdem via Snort-devel <
snort-devel at lists.snort.org> wrote:

> Hello Everyone,
>
> I changed community rules with my own rules and I realize that SNORT just
> prints alert messages maximum 5 times to console if it finds more than 5
> alerts. For instance, I inspect one packet's payload with WireShark and
> wrote one rule which matches with packet's payload. I wrote this rule 20
> times to rule file and I ran Snort. Snort gave me just 5 alert messages.
> How can I increase this alert count ? I am working on a Project and I am a
> beginner. I am very pleased if you can help me.
>
> Example:
>
> Rule File:
> alert tcp any any -> any any (msg:"Feature1"; content:"#JN1"; nocase;
> sid:1)
> alert tcp any any -> any any (msg:"Feature2"; content:"#JN1"; nocase;
> sid:2)
> alert tcp any any -> any any (msg:"Feature3"; content:"#JN1"; nocase;
> sid:3)
> .
> .
> .
> alert tcp any any -> any any (msg:"Feature20"; content:"#JN1"; nocase;
> sid:20)
>
> Snort Output:
> 05/-22:56:55.056993  [**] [1:2019:0] Feature2 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
>

the [gid:sid:revision] https://www.snort.org/rule_docs/1-2019 do not
correspond to your alert settings above. Is this a real snort output?

Marcin


> 05/-22:56:55.056993  [**] [1:2017:0] Feature4 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> 05/-22:56:55.056993  [**] [1:2015:0] Feature11 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> 05/-22:56:55.056993  [**] [1:2013:0] Feature15 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> 05/-22:56:55.056993  [**] [1:460:0] Feature18 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> Total Alerts: 5
>
> Expected Output:
> 05/-22:56:55.056993  [**] [1:2019:0] Feature1 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> 05/-22:56:55.056993  [**] [1:2017:0] Feature2 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> 05/-22:56:55.056993  [**] [1:2015:0] Feature3 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> .
> .
> .
> 05/-22:56:55.056993  [**] [1:2013:0] Feature19 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> 05/-22:56:55.056993  [**] [1:460:0] Feature20 [**]  [Priority: 0] {TCP}
> 46.20.153.125:80 -> 10.0.2.15:56216
> Total Alerts: 20
>
>
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