Apparatus and method for filtering packet in a network...

Details Apparatus and method for filtering packet in a network... Apparatus and method for filtering packet in a network...

2007-08-22

2011-10-11

Jung, Min (Department: 2472)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C726S013000

Reexamination Certificate

active

08036232

ABSTRACT:
A packet filtering apparatus for filtering a packet transmitted from a mobile node to a correspondent node in a network system using Mobile Internet Protocol (IP). The packet filtering apparatus includes a next header reader for reading a next header of the received packet to determine whether it is a mobility header, a mobility header type reader for reading a mobility header type when the next header is the mobility header, a mobility option reader for reading a mobility option added by the mobile node, and a packet rule applier for determining whether a home address included in the mobility option read by the mobility option reader is identical to a source address stored in a packet filter rule, and determining whether to pass the packet according to the determination result.

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