Am Donnerstag, 27. September 2007 03:38 schrieb Todd W:
> From: "Kevin Katz" <[EMAIL PROTECTED]>
>
> > We have recently been flooded by bots hitting the pop3 looking for valid
> > email addresses. Most of our clients use pop3-ssl, which the bots don't
> > seem
> > to touch that, but I hate to shut down pop3 access all together. Has
> > anyone
> > on the list come up with a solution to limit the number of invalid pop3
> > login attempts.
>
> The most effective thing I've found to do is implement throttling via
> blockhosts or similar. This is a layer above QMT, which is nice because it
> generally works on all things linux.
>
> Regards,
>
> Todd W.
>
Have a look at sshdfilter. a tool written for ssh-attacks but can be
customized to monitor pop3 or every service you want.
http://www.csc.liv.ac.uk/~greg/sshdfilter/
Regards,
Andreas
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