On an interesting , but possibly relevant note:
I've noticed that the number of web spam attempts on my server has
dropped by 90% since Jan 2. I'm not sure if this is relevant or not.
Just thought I would share.
Jason
dubai wrote:
>to your information see:
>https://events.ccc.de/congress/2005/wiki/Gulliddos
>----------
>Hi there,
>
>We now get Step2 of the ddos! We get udp-floods to
>port 80. We have currently no own router in front of,
>so we cant block the requests. Services on all
>websites (antispam, computerbetrug and antispam) down
>for 1-2 hours. Update: Our ISP is blocking the
>udp-flood for us.
>
>[1] is the biggest german "underground portal". We and
>3 other german customer protection websites
>(dialerschutz.de, antispam.de and computerbetrug.de)
>get currently a big ddos by an unknown attacker. We
>have collected a lot of information, and want to make
>them public here.
>
>It seems that the attacker build a botnet with about
>5.000 zombies. We found a way to identify most of the
>affected hosts. Now we blacklist all those hosts by
>hi-pac (an iptables-replacement), so the site is still
>up.
>
>Here is a list with all clients we currently block:
>https://events.ccc.de/congress/2005/mediawiki/images/a/a1/Ipliste.txt
>
>(anyone knows how to upload some stuff with no
>"/images" in the url? :) )
>
>Our current setup includes the following:
>
>mod_security is activated in apache. Then we do the
>following match:
>
>SecFilterEngine On SecFilterSelective "FOOBAR"
>"uninteresting"
>"log,status:500,exec:/usr/local/bin/mod_security/wrapper"
>
>/usr/local/bin/mod_security/wrapper is an modified
>wrapper, which gets the ip of the attacker as an
>argument. Those ips are added to our blacklist with
>iptables.
>
>
>The most of those hosts should be owned by some
>rootkit or trojan horse. So feel free to investigate.
>Maybe something interessting is there ;-)
>
>
>If you have some questions or informations: contact
>deg...@ja... or icq 169800965 or mail:
>cd...@wa...
>
>
>Our new wrapper is available at
>http://download.wavecon.de - its gpl, so use it! :)
>
>
>
>
>
>
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