Getting pounded .. sigh

[Julian Field]

Steve,

Please can you add this to the Wiki? It's a very useful little mine of 
information. Just the link and your contents list of it will do, with 
some links to the original.

Thanks!
Jules.

Stephen Swaney wrote:
> Stephen Swaney
> Fort Systems Ltd.
> stephen.swaney at fsl.com
> www.fsl.com
>
>   
>> -----Original Message-----
>> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
>> bounces at lists.mailscanner.info] On Behalf Of Kevin Miller
>> Sent: Monday, May 22, 2006 2:16 PM
>> To: MailScanner discussion
>> Subject: RE: Getting pounded .. sigh
>>
>> sandrews at andrewscompanies.com wrote:
>>     
>>> I remember talk some time ago, not here, of a way to slow down the
>>> sender by doing something with an ACK (really out of my pond here).
>>> Anyone know what I might be thinking of?  If there's some way to hold
>>> the connection to sender open, that would slow them down sending out
>>> crap.
>>>       
>> I thnk you're thinking of sendmail's greet pause feature.  Works great
>> for "botted" home machines, but real MX hosts aren't tripped up by it.
>> Another feature that may be of some help is the recipient throttle
>> (assuming he's using sendmail - Postfix, etc. probably have something
>> similar) but I'm not using it myself so don't know for sure...
>>
>>
>>
>> ...Kevin
>> --
>>     
>  If you're using sendmail 8.13 look at:
>
> 	http://www.technoids.org/dossed.html 
>
> It's Contents
>
>     * 1. Limiting the Rate of Incoming Connections
>           o 1.1. The ratecontrol Feature
>           o 1.2. The Connection Rate Throttle
>     * 2. Limiting Simultaneous Connections with the conncontrol Feature
>     * 3. Thwarting Dictionary Attacks
>           o 3.1. Limiting the Number of Recipients per Message
>           o 3.2. Reacting to "Bad" Recipients
>     * 4. Blocking Slammers with the greet_pause Feature
>     * 5. Other Ways to Protect Your sendmail Server
>     * 6. Afterword
>
>
> Steve
>
> Stephen Swaney
> Fort Systems Ltd.
> stephen.swaney at fsl.com
> www.fsl.com
>
>   

-- 
Julian Field
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