RE: DoS test on specific TCP Port

[Wong Yu Liang <wong.yuliang () vads com>]

Hi,
 Not sure if anyone suggested syn flooding. Jolt is pretty cool.

Regards
Yuliang

-----Original Message-----
From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Shankar Arjunan
Sent: Tuesday, July 21, 2009 3:18 PM
To: Benjamin Greenfield
Cc: pen-test () securityfocus com
Subject: Re: DoS test on specific TCP Port

Hi Benjamin / All,

Thank you all for the responses.

It is for an inhouse application which is going to be live soon, before
going live thought of doing a stress test on specific port for DoS type
attacks and see the outcomes.

I will use hping and do a test.

Regards
Shankar
----- Original Message -----
From: "Benjamin Greenfield" <bcg () struxural com>
To: <shankar.arjunan () gmail com>
Cc: <pen-test () securityfocus com>
Sent: Saturday, July 18, 2009 5:56 AM
Subject: Re: DoS test on specific TCP Port


You can try using hping3 to send out all sorts of traffic in all kinds
of different frequencies and bursts.   However, the first thing you
should do is verify with your client that they consent to you trying a
DoS attack.  Depending on application / service / OS is connected to
that port there may be particular vulnerabilities and / or exploits
that result in DoS conditions as well.

As far as determining the effectiveness of the attack, you'd need to
log all the incoming responses and evaluate them I suppose.  I would
expect subtle differences would account for things like an IPS
blacklisting your IP versus the host actually going offline or slowing
due to load, and depending on the specifics it may not actually be
possible to determine what precisely occurred target-side happened.

Seriously, verify that the client wants you to test a DoS first though...


On Thu, Jul 16, 2009 at 9:18 PM, <shankar.arjunan () gmail com> wrote:
> Dear All,
>
> I am performing a pentest on server, can anyone tell me if there is any
> script or tool or a method available to test a specific TCP port (eg:
> 1310) for server load test by doing DoS/DDoS type attacks. This is to
> check how the server responds for attack on specific port, any
> possibilities of server going down or to check any degrade of performance.
>
> Please advice.
>
> Regards
> Shankar
>
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