Screening of data packets in a gateway

Details Screening of data packets in a gateway Screening of data packets in a gateway

2006-02-07

2006-02-07

Ali, Mohammad (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

06996573

ABSTRACT:
A method for processing data packets in a gateway element comprises the steps of: comparing a data packet to screening information comprising a set of rules, and processing a data packet according to a rule belonging to the set of rules, the header information of said data packet matching the header information of said rule. The method is characterized in that said screening information is hierarchically structured so that it comprises a first rule, which specifies first header information, and a subset of rules relating to said first rule, and in that in said step of comparing a data packet, said data packet is compared to said subset of rules only if the header information of the data packet matches the header information of the first rule. A gateway element, an arrangement, and a data structure comprising screening information are also presented.

REFERENCES:
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patent: 0 909 075 (1999-04-01), None
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patent: WO 00/60793 (2000-10-01), None
Huitema, “IPv6: The New Internet Protocol”, 1998, Prentice Hall, Inc., Upper Saddle River 270260, XP002313255, p. 10.

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