[CentOS] DoS Attack

Alexandru E. Ungur alexandru at globalterrasoft.ro
Wed Oct 12 21:11:23 UTC 2005

>>> sender: "John Hinton" date: "Wed, Oct 12, 2005 at 04:51:48PM -0400" <<<EOQ
> Yesterday, I had a DoS attack on a php/mysql webpage which uses a lot of 
> resources. I have learned today, as a for instance, in the last hour, 
> about 3000 requests for that page were made by 610 different servers, 
> mostly from 'odd' places... China, Russia, Poland, Turkey... the usual 
> suspects from my experience.
> The bottom line is this... I hit server loads of 142 yesterday!!! And 
> the server never crashed! Yeah, it might as well have been dead, but it 
> wasn't. Yes, some things shut down temporarily... but the machine never 
> went down. This is a remote server, about an hour away.. It took about 
> 20 minutes for my mysqld stop command to execute, but with time it did 
> respond! I'm extremely impressed by this and just wanted to pass this 
> 'trivia' along. EL rocks!
It rocks even better... :) I've had it hit 200+ load and it went smoother
than others did on a load of 20... If was a webservers with *many* webpages
hit by spiders.

A good night to everyone (if it is night in your part of the world too :) ),

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