does sendmail actually close the socket? I thought it maintained control
of the socket and just closed each connection as it was opened.
David Lang
On Wed, 21 Oct 1998, Ion Badulescu wrote:
> Date: Wed, 21 Oct 1998 02:46:22 -0400
> From: Ion Badulescu <ionut@moisil.cs.columbia.edu>
> To: linux-kernel@vger.rutgers.edu
> Subject: Re: setting access rights to priviledged ports
>
> On Tue, 20 Oct 1998 02:53:02 -0400, Anthony Barbachan wrote:
>
> > From: Olaf Titz <olaf@bigred.inka.de>
> >>(Btw. for any services started from inetd there is a trivial way to
> >>shut them down.)
> >>
> >
> > Is this trivial way doable by a normal user? If so then this is a serious
> > security bug.
>
> It's an even more serious DoS problem otherwise.
>
> And btw even sendmail can be convinced to shut down, quite trivially --
> just cause the load to go over the limit set in sendmail.cf and sendmail
> will close its socket. Then you are free to bind to it if the port is over
> 1023.
>
>
> Ion
>
> --
> It is better to keep your mouth shut and be thought a fool,
> than to open it and remove all doubt.
>
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