OSEC

Neohapsis is currently accepting applications for employment. For more information, please visit our website www.neohapsis.com or email hr@neohapsis.com
Bugtraq archives for 3rd quarter (Jul-Sep) 1998: Re: 1+2=3, +++ATH0=Old school DoS

Re: 1+2=3, +++ATH0=Old school DoS

kill9 (kill9SUCCEED.NET)
Mon, 28 Sep 1998 00:02:32 -0700 

On Sun, 27 Sep 1998, Brett Glass wrote:

> Today, it's rare to find a modem that responds to the attack unless there
> happens to be a long pause in the data stream after the "+++".
...
> Therefore, this DoS attack isn't a big deal. It's easily preventable,
> rarely effective, and relatively harmless (all you have to do, if it hits,
> is redial).
>
> --Brett Glass
>

I have tested this out here locally, as well as with the help from a few
other people onlin and it seems that 6 of 9 modems have been affected. I
would hardly call that 'rarely effective', relatively harmless yes, but
it seems to be a large percentage.  I am interested to see more results
as too how wide spread this is.

(all tests were done using ping -p 2b2b2b415448300d host )

kill9