Hey, we have been encountering three short DoS attacks during the weekend - each one around 1 hour in length and with about 100mbit worth of bandwidth. So far, we've yet to determine even the most basic stuff, since we don't seem to have any logging. I have two questions regarding this: 1. isn't one hour a pretty short time for a DoS? I've seen attacks on other nets lasting for hours, sometimes up to a day... 2. is there any tool to determine the source IPs of the attack (even if they're spoofed, I'd like to see _anything_)? Snort sits on the attacked host and happily reports SQL/Slammer and other trivial stuff, but goes through one of the attacks without picking any signatures up. Regards, --ck -- php development | hosting | housing | professional game server hosting http://www.de-punkt.de [ chris@de-punkt.de ] http://www.stormix.de +49 511 1237504 | +49 511 1237505 | laportestr. 2a, 30449 hannover.de Filoo auf dem Linuxtag 2003 (F15) - http://www.de-punkt.de/lt2003.php ---------------------------------------------------------------------------- Attend the Black Hat Briefings & Training, July 28 - 31 in Las Vegas, the world's premier technical IT security event! 10 tracks, 15 training sessions, 1,800 delegates from 30 nations including all of the top experts, from CSO's to "underground" security specialists. See for yourself what the buzz is about! Early-bird registration ends July 3. This event will sell out. www.blackhat.com ----------------------------------------------------------------------------
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