[imp] Block IP

Darryl Cook dlc at cs.appstate.edu
Fri Mar 27 02:47:29 UTC 2009

Take a look at a program called  fail2ban to do this....works pretty good imo.

Quoting Jacky Chan:

> Hi all,
> I am wondering whether Horde-IMP has this function for security concerns.
> I used IMP as Horde authentication application.
> But I logged there are plenty login failure record generated for IMP.
> And the username is obivously generated from dictionary.
> And the login retry period is so short from one IP that seems to be machine
> generated.
> That let me believe that I was under dictionary attack.
> I would like to ask IMP or Horde can deny the IP when number of login
> failure over certain limit in short range? Or Horde/IMP doesn't handle,
> please give me hints on this from third party.
> Thanks.
> Regards,
> Jacky
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Darryl Cook
Systems Administrator - Computer Science
Appalachian State University
Boone, NC 28607

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