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Date: 1999-01-23
Smurf-attack: Die Pingflut kommt-.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- unbedingt ein Guter ist, zeigt die steigende Zahl sogenannter "Smurf-Attacks." Ein einziger, schlimmer User kann ganze Provider-Netzwerke in einer Ping/Springflut ersaufen lassen, bloss weil er sich mit einem einzigen, anderen User um ein Chat/Pseudonym gestritten hat. post/scrypt: Eine Kunst/partie, das sogenannte "Electronic Disturbance Theater" verwechselt diese hirn/tote Vorgangsweise mit Netzpolitik. -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- Andy Patrizio January 21, 1999 A growing number of network administrators are finding themselves on the receiving end of an attack that they can't stop, thanks to an exploit in TCP/IP and one malicious hacker. Problems often originate on Internet Relay Chat, a real-time chat network known as IRC with thousands of channels and tens of thousands of users where people meet and talk in "chat rooms" in real time. .... Fights frequently break out in these channels as network gurus put their knowledge of TCP/IP to the worst kind of use. By using a flaw in TCP/IP, it's possible to attack anyone on IRC -- to knock them off chat and even take down their ISP. The attack is called a "Smurf" attack. Smurf works by sending out a ping to hundreds or even thousands of sites and telling them to all respond to a single IP address. ... A user with a 28.8k modem can put out enough bandwidth to fill one-third of the capacity of a T1 (1.54 megabits/sec.) line, according to Gary, an IRC operator who asked that his full name not be used. ... "I used to use IRC to chat, but now I've got to try not to get flooded off and try not to get hacked," he said. ... The Computer Emergency Response Team (CERT) at Carnegie-Mellon University said Smurf attacks went up from 3 percent of reported incidents in January 1998 to 10 percent by December of that year, according to Jed Pickel, a member of the CERT technical staff. ... Yale recently removed its IRC server because of these attacks and New York University was recently flooded so bad it was off the network for two weeks, he said. ... As bad as Smurf attacks are, there's no way to stop them. The packet flood can be blocked at the router or at the upstream service provider, but that doesn't prevent the flood from being unleashed in the first place. ... There are ways to solve the problem, Gary said. IPv6, the next generation of the TCP/IP networking protocol, will close this loophole and not allow for domain spoofing, but it won't see wide deployment for several years. ... full text http://www.nytimes.com/techweb/TW_Internet_Chat_Wars_Spill_Over_.html relayed by [email protected] via mea culpa [email protected] -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- - -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- edited by published on: 1999-01-23 comments to [email protected] subscribe Newsletter - -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- -.-. --.- 
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