Methods and systems for firewall/data protection that filters data packets in real time and
without packet buffering are disclosed. A data packet filtering hub, which may be imple …

Inventor: Andrew K. Krumel, San Jose, CA (57)(US) Methods and systems for firewall/data
protection that filters data packets in real time and without packet buffering are disclosed. A …

USPC....................... 370/255,370/395.21: 370/465 transmitting commands. The present
invention may be imple (58) Field of Classification Search mented without requiring CPU …

This invention pertains to packet filtering. More Specifically, it relates to a use of Small,
optimized Sequences of binary 5-tuples representing filter rules to achieve Space efficient …

3 They are not intended as an exhaustive description of the invention or as a limitation on
the scope of the invention. In addition, an illustrated embodiment needs not have all the …

Systems and methods are disclosed that allow for improved management and control of
packet forwarding in network systems. Network devices and tool optimizers and a related …

A packet filter for filtering data packets in a communications network is described. The
packet filter has input and output ports for receiving and transmitting respective data packets …

US PATENT DOCUMENTS 5,343,471 A 8/1994 Cassagnol................... 370/401 5.426, 378 A
6/1995 Ong............................ 326/39 5.426, 379 A* 6/1995 Trimberger.................. 326/39 …

US8265060B2 - Packet data filtering - Google Patents US8265060B2 - Packet data filtering -
Google Patents Packet data filtering Download PDF Info Publication number US8265060B2 …

A packet filter (2500) for incoming communications packets includes extractor circuitry
(2510) operable to extract data from a packet, and packet processor circuitry (2520) …