Method and apparatus for protecting legitimate traffic from dos and ddos attacks

An apparatus for protecting legitimate traffic from DoS and DDoS attacks has a high-priority ( 505 ) and a low-priority ( 506 ) queue. Besides, a queue information table ( 402 ) has STT (Source-based Traffic Trunk) service queue information of a specific packet. A queue coordinator ( 502 ) updates t...

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Bibliographic Details
Main Authors AHN GAEIL, KIM KI-YOUNG, JANG JONG SOO
Format Patent
LanguageEnglish
Published 23.02.2006
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:An apparatus for protecting legitimate traffic from DoS and DDoS attacks has a high-priority ( 505 ) and a low-priority ( 506 ) queue. Besides, a queue information table ( 402 ) has STT (Source-based Traffic Trunk) service queue information of a specific packet. A queue coordinator ( 502 ) updates the queue information table ( 502 ) based on a load of a provided STT and a load of the high-priority queue ( 505 ). A packet classifier ( 504 ) receives a packet from the network access unit ( 508 ), investigates an STT service queue of the packet from the queue information table ( 502 ), selectively transfers the packet to the high-priority ( 505 ) or the low-priority ( 506 ) queue and provides information on the packet to the queue coordinator ( 503 ). A buffer ( 507 ) buffers outputs of the high-priority ( 505 ) and the low-priority ( 506 ) queue and provides outputs to the network ( 509 ) to be protected.
Bibliography:Application Number: US20050535455