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Re: 2.99.55 caused DoS attack
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.
Reading the ChangeLog, I think the busy-loop-like thing is likely
fixed in 2.99.55-patch1
> Index: libc/myhostname.c
> Eugene Crosser, head of Internet Applications section, +7 501 787 1000
> ROL, Teleross, Golden Telecom, http://user.rol.ru/~crosser/
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