dictionary attack

[Stephen Cox]

+1 for fail2ban. I am using it for a month now and it works like an charm.

On Fri, Feb 18, 2011 at 10:34 PM, Alex Neuman van der Hans <
alex at vidadigital.com.pa> wrote:

> Try fail2ban or vispan.
>
>
> On 2/18/2011 3:08 PM, Mikael Syska wrote:
>
>> Hi,
>>
>> <joke>
>> Go offline ... then they can't attack your domain.
>> </joke>
>>
>> What seems to be the problem? Since you can't really make them stop
>> ... there arent much you can do other than deny delivery for unknown
>> users in your system ... and then scan the rest.
>>
>> Still ... I can't see the problem.
>>
>> mvh
>> Mikael Syska
>>
>> On Fri, Feb 18, 2011 at 8:44 PM, Ejaz<mejaz at cyberia.net.sa>  wrote:
>>
>>> Hello,
>>>
>>>
>>>
>>> Now days there is lots of dictionary attacks towards my domain, find the
>>> below one of the example, would any one please help me how can I prevent
>>> such attacks,
>>>
>>>
>>>
>>> In my Linux machine, I have postfix, MailScanner, Spamassasin and clamav,
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>  xulmymyzfjkaf at boutiquesearchfirm.com
>>>
>>>                                          nkanta at cyberia.net.sa
>>>
>>>                                          nm2001 at cyberia.net.sa
>>>
>>>                                          nmj at cyberia.net.sa
>>>
>>>                                          nmj_textile at cyberia.net.sa
>>>
>>>                                          nmjnn at cyberia.net.sa
>>>
>>>                                          nnasmac at cyberia.net.sa
>>>
>>>                                          nnasmacb at cyberia.net.sa
>>>
>>>                                          nnasmacd at cyberia.net.sa
>>>
>>>                                          nnasmacdd at cyberia.net.sa
>>>
>>>                                          nnasr at cyberia.net.sa
>>>
>>>                                          nnsisco at cyberia.net.sa
>>>
>>>                                          noda at cyberia.net.sa
>>>
>>>                                          nomer1 at cyberia.net.sa
>>>
>>>                                          nospam at cyberia.net.sa
>>>
>>>                                          notify at cyberia.net.sa
>>>
>>>                                          nour at cyberia.net.sa
>>>
>>>                                          noura at cyberia.net.sa
>>>
>>>                                          nozhamed at cyberia.net.sa
>>>
>>>                                          nplumbly at cyberia.net.sa
>>>
>>>                                          ns at cyberia.net.sa
>>>
>>>                                          nsaf-riyadh at cyberia.net.sa
>>>
>>>                                          nsaurabia at cyberia.net.sa
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Regards,
>>> __________________
>>> Ejaz
>>> Sr,Systems Administrator
>>> Middle East Internet Company (CYBERIA)
>>> Riyadh, Saudi Arabia
>>> Phone: +966-1-4647114  Ext: 140
>>> Mobile +966-562311787
>>> Fax: +966-1-4654735
>>> E-mail: mejaz at cyberia.net.sa
>>>
>>>
>>>
>>> --
>>> This message has been scanned for viruses and
>>> dangerous content by MailScanner, and is
>>> believed to be clean.
>>> --
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>>>
>>> Support MailScanner development - buy the book off the website!
>>>
>>>
>>>
> --
> --
>
> Alex Neuman van der Hans
> Reliant Technologies / Vida Digital
> http://vidadigital.com.pa/
>
> +507 6781-9505
> +507 832-6725
>
> Follow @AlexNeuman on Twitter
> http://facebook.com/vidadigital
>
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>



-- 
Stephen Cox
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