Re: Sessions Resource Exhaustion

Hello,

On Thu, 11 Oct 2007 09:14:02 -0700
"Ravi Chunduru" <[email protected]> wrote:

> using simple tools such as hping2 and others, i am able to exhaust
> session resources in some firewall and IPS devices. some firewalls and
> IPS devices addressing small business market segments seems to be
> supporting maximum of 10000 sessions.  these devices are not allowing
> any new connections if all 10000 sessions are used up.
> 
> can i say that these devices are vulnerable to simple DoS attacks?

In fact, you've to take in consideration a simple thing,
a security device (and a specific model) is build for a specific job,
this is why there're so differents models inside a same company.
To exceed the limits of designs is not a proof that a device is not
good for it (aka vulnerable), just that it is not ready for that.

Best regards,

Jean-philippe.


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