Patent ID: 6996573
Filing Date: 2006-02-07
Classification: H04L,Y10S

Abstract:
1. An arrangement including at least one gateway element and a database entity, said at least one gateway element comprising means storing information for screening data packets and means processing data packets, said processing involving comparison of a data packet header to header information specified in said screening information, said database entity including means providing information for screening data packets, said at least one gateway element including means receiving at least part of said information for screening data packets from said database entity, and said processing means being configured to compare header information of a data packet to screening information comprising a first rule, which specifies first header information, and a subset of rules relating to said first rule, and configured to compare a data packet to said subset of rules only if the header information of the data packet matches the header information of the first rule, and wherein said screening information comprises a first part, which is modifiable by an entity authorized to configure said gateway element, and a second part, which is modifiable by an entity specifically authorized to modify said second part.