Thomas Lee Gallatin

US Patent:

7613837, Nov 3, 2009

Filed:

Dec 12, 2003

Appl. No.:

10/735417

Inventors:

Stephen C. Gordy - Sunnyvale CA, US
Henry D. Poelstra - Ottawa, Ontrario, CA
Robert W. Otis - San Jose CA, US
Thomas L. Gallatin - San Jose CA, US

International Classification:

G06F 15/16

US Classification:

709250

Abstract:

A network tap for enabling attached devices, such as an intrusion detection system, to transmit information into a communication line of the network without disrupting the network traffic on the communication line. When the attached device is an intrusion detection device, the network tap is connected to a firewall. An Ethernet switch or field programmable gate array (FPGA) is incorporated in the network tap to coordinate the transmission of device data to avoid data collisions with data transmissions already existing in the communication line. The network tap may be operated in various modes to accommodate different capabilities of attached devices. In addition, the network tap has various port configurations to allow a user to connect various attached devices through a single cable or dual cables.

US Patent:

20040190547, Sep 30, 2004

Filed:

Feb 11, 2004

Appl. No.:

10/776579

Inventors:

Stephen Gordy - Sunnyvale CA, US
Henry Poelstra - Ottawa, CA
Robert Otis - San Jose CA, US
Thomas Gallatin - San Jose CA, US

International Classification:

H04L012/66

US Classification:

370/463000

Abstract:

A system and method is presented for a network tap having integrated circuitry therein for obtaining statistics about a communication line. The network tap also has a routing node for allowing information to be transmitted back into the communication line from an attached device without disrupting the communication traffic. The routing node coordinates the transmission of device data from an attached device to avoid data collisions with data transmissions already existing in the communication line. The routing node may be an Ethernet switch or field programmable gate array (FPGA). The integrated circuit may be a microprocessor or FPGA. The integrated circuit also controls other components of the network tap. The integrated circuit may also be programmed or upgraded to provide other functions.

US Patent:

20050129033, Jun 16, 2005

Filed:

Dec 13, 2003

Appl. No.:

10/735801

Inventors:

Stephen Gordy - Sunnyvale CA, US
Henry Poelstra - Mountain View CA, US
Robert Otis - San Jose CA, US
Thomas Gallatin - San Jose CA, US

International Classification:

H04L012/56

US Classification:

370401000, 370366000

Abstract:

A network tap for enabling attached devices, such as an intrusion detection system, to transmit information into a communication line of the network without disrupting the network traffic on the communication line. When the attached device is an intrusion detection device, the network tap is connected to a firewall. An Ethernet switch or field programmable gate array (FPGA) is incorporated in the network tap to coordinate the transmission of device data to avoid data collisions with data transmissions already existing in the communication line. The network tap may be operated in various modes to accommodate different capabilities of attached devices. In addition, the network tap has various port configurations to allow a user to connect various attached devices through a single cable or dual cables and to connect various combinations of attached devices.