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Re: 2.99.55 caused DoS attack
On Mon, Apr 14, 2003 at 12:39:31PM +0300, Matti Aarnio wrote:
> On Mon, Apr 14, 2003 at 12:52:11PM +0400, Eugene Crosser wrote:
> > On Fri, 2003-04-11 at 22:21, Roy Bixler wrote:
> > > My day today has been rather "interesting" so far. Campus networking
> > > twice had to disable the network port for our Z-Mailer 2.99.55 mail
> > > server due to DoS attack on their name servers.
> >
> > The function that creates bounce report uses dns to find *local* host
> > name. If you have several entries in the "search" line, it issues as
> > many DNS requests. This is the fix that I use here:
>
> Right. Now that you mentioned this again...
> I applied this.
I don't think this was my problem last week, since I only had one
entry in the "search" line. On the other hand, I had several
"nameserver" lines.
> Reading the ChangeLog, I think the busy-loop-like thing is likely
> fixed in 2.99.55-patch1
You are talking about a separate patch? Anyway, I will update my
filed Debian bug report with this information.
thx,
--
Roy Bixler <rcb@ucp.uchicago.edu>
The University of Chicago Press
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