发明授权
- 专利标题： Packet filtering apparatus that applies a plurality of filtering conditions including different comparison criteria to a single packet
- 专利标题（中）： 包过滤装置，其将包括不同比较标准的多个过滤条件应用于单个分组
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申请号： US09386071申请日： 1999-08-30
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公开(公告)号： US06584069B1公开(公告)日： 2003-06-24
- 发明人: Hideki Kagemoto , Takashi Kakiuchi , Naoya Takao , Kazuo Okamura
- 申请人： Hideki Kagemoto , Takashi Kakiuchi , Naoya Takao , Kazuo Okamura
- 优先权： JP10-245729 19980831
- 主分类号： H04L1226
- IPC分类号： H04L1226
摘要：
A packet filtering apparatus selectively outputs packets among a plurality of inputted packets. A plurality of conditions are stored, with each condition being specified by a partial data position that indicates a position of a data part of a packet, comparison data to which the data part is to be compared, and a comparison criterion for comparing the data part and comparison data. Different conditions contain different comparison criteria. When filtering packets, a condition in one of the stored conditions is selected, and a data part of an inputted packet is compared with the comparison data of the selected condition according to the comparison criterion in the selected condition. Packets are selectively outputted depending on the result of the comparison.
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