gfxgfx
 
Please login or register.

Login with username, password and session length
 
gfx gfx
gfx
75436 Posts in 13210 Topics by 2646 Members - Latest Member: Birchy65 December 14, 2017, 01:15:39 pm
*
gfx*gfx
gfx
WinMX World :: Forum  |  Discussion  |  WinMx World News  |  DoS attacks that took down big game sites abused Web’s time-synch protocol
gfx
gfxgfx
 

Author Topic: DoS attacks that took down big game sites abused Web’s time-synch protocol  (Read 272 times)

0 Members and 1 Guest are viewing this topic.

http://arstechnica.com/security/2014/01/dos-attacks-that-took-down-big-game-sites-abused-webs-time-synch-protocol/

Quote
Miscreants who earlier this week took down servers for League of Legends, EA.com, and other online game services used a never-before-seen technique that vastly amplified the amount of junk traffic directed at denial-of-service targets.

Rather than directly flooding the targeted services with torrents of data, an attack group calling itself DERP Trolling sent much smaller-sized data requests to time-synchronization servers running the Network Time Protocol (NTP). By manipulating the requests to make them appear as if they originated from one of the gaming sites, the attackers were able to vastly amplify the firepower at their disposal. A spoofed request containing eight bytes will typically result in a 468-byte response to victim, an increase of more than 58 fold.

"Prior to December, an NTP attack was almost unheard of because if there was one it wasn't worth talking about," Shawn Marck, CEO of DoS-mitigation service Black Lotus, told Ars. "It was so tiny it never showed up in the major reports. What we're witnessing is a shift in methodology."

The technique is in many ways similar to the DNS-amplification attacks waged on servers for years. That older DoS technique sends falsified requests to open domain name system servers requesting the IP address for a particular site. DNS-reflection attacks help aggravate the crippling effects of a DoS campaign since the responses sent to the targeted site are about 50 times bigger than the request sent by the attacker.

WinMX World :: Forum  |  Discussion  |  WinMx World News  |  DoS attacks that took down big game sites abused Web’s time-synch protocol
 

gfxgfx
gfx
©2005-2017 WinMXWorld.com. All rights reserved.
SMF 2.0.15 | SMF © 2017, Simple Machines
Page created in 0.026 seconds with 21 queries.
Helios Multi © Bloc
gfx
Powered by MySQL Powered by PHP Valid XHTML 1.0! Valid CSS!