detecting Dos attacks on mininet

[<priyankshah902002 () gmail com>]

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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