Re: detecting Dos attacks on mininet

[Jason Wallace <jason.r.wallace () gmail com>]

Your -p is 21 but your rule is looking on port 80. That might be the
problem.


On Fri, Jul 22, 2016 at 5:54 AM <priyankshah902002 () gmail com> wrote:

> Hi all,
>
>
>
> I  have set up a small topology with one switch, four hosts and a remote
> opendaylight controller using Mininet. I have also set up a bridge where
> all the traffic to h2 is mirrored to h3(10.0.0.3) using port mirroring. I’m
> running Snort on h3. I use the following command to initiate a syn flood
> attack from h1 (10.0.0.1) to h2(10.0.0.2) :
>
>
>
> Hping3 -c 10000 -d 120 -S -w 64 -p 21 –flood –rand-source 10.0.0.2
>
>
>
> I have used the following rule for detection:
>
>
>
> alert tcp any any -> $HOME_NET 80 (flags: S; msg:"Possible TCP DoS"; flow:
> stateless; detection_filter: track by_dst, count 70, seconds 10;
>
>
>
> but wont detect the syn packets. I used a test rule to detect icmp packets
> and that works perfectly.
>
> Can you please point out any mistake that I have or could have made.
>
>
>
> Thank You,
> Priyank
> priyankshah902002 () gmail com
>
>
>
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------------------------------------------------------------------------------
What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
patterns at an interface-level. Reveals which users, apps, and protocols are 
consuming the most bandwidth. Provides multi-vendor support for NetFlow, 
J-Flow, sFlow and other flows. Make informed decisions using capacity planning
reports.http://sdm.link/zohodev2dev

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