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Secret hashing for TCP SYN/FIN correspondence
No:
7373663
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Numero de solicitud:
10316883
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Fecha archivado:
2002-12-12
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Fecha emision:
2008-05-13
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Tipo:
B2
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Demandas:
11
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Hojas de dibujos:
3
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Resumen:
A mechanism for detecting denial of service attacks in a digital communications system is described. A probabilistically determined portion of input packets of a connection are processed using a hash function to determine whether the packets belong to the flow initiated by a TCP SYN packet. The hash function includes a secret key for additional security. The result of the hash function is added to a value which is dependent on the sequence number of a packet being processed.
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Inventores:
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Examinador principal:
Smithers Matthew
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Ayundate de examinador:
Khoshnoodi Nadia
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Cesionarios:
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Documentos extranjeros:
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1 154 610 / 2001-10-31
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Otras referencias:
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Snoeren et al., “Hash-Based IP Traceback,” ACM SIGCOMM 2001, pp. 7-11.
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Duffield et al., “Properties and Prediction of Flow Statistics from Sampled Packet Streams,” AT&T Labs-Research, (c)2002 ACM, pp. 159-170.
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“Detecting SYN flooding attacks”, Haining Wang et al., 2002 IEEE.
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“Analysis of a denial of service attack on TCP”, Christoph L. Schuba et al., 1997 IEEE.
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Referencias:
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5542089
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5958053
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6321338
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