Patent ID: 8374185
Filing Date: 2013-02-12
Classification: H04L

Abstract:
1. A packet inspection device comprising a computer readable medium containing program codes to control the packet inspection device for: storing, comparing, and screening to select a packet in presence of 3-way handshaking underway at the Transmission Control Protocol (TCP) layer, for converting information into a hashing function value, and for storing the hashing function value, so as to allow header information of the packet to be converted into the hashing function value and the hashing function value to be compared and stored to create a session connection upon determining that information stored does not match the hashing function value resulting from the conversion, and perform packet state comparison and packet screening upon determining that information stored matches the hashing function value resulting from the conversion; and creating a transmission connection according to the screened packet, wherein the program codes further control the packet inspection device for: