Michael D Williamson

US Patent:

6502135, Dec 31, 2002

Filed:

Feb 15, 2000

Appl. No.:

09/504783

Inventors:

Edmund Colby Munger - Crownsville MD
Douglas Charles Schmidt - Severna Park MD
Victor Larson - Fairfax VA
Michael Williamson - South Riding VA

Assignee:

Science Applications International Corporation - San Diego CA

International Classification:

G06F 15173

US Classification:

709225, 709229, 709245

Abstract:

A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer that allows a large number of nodes to communicate with a central node by partitioning the communication function between two separate entities.

US Patent:

6618761, Sep 9, 2003

Filed:

Feb 26, 2002

Appl. No.:

10/082164

Inventors:

Edmund Colby Munger - Crownsville MD
Douglas Charles Schmidt - Severna Park MD
Robert Dunham Short - Leesburg VA
Victor Larson - Fairfax VA
Michael Williamson - South Riding VA

Assignee:

Science Applications International Corp. - San Diego CA

International Classification:

G06F 15173

US Classification:

709241, 709242, 370232, 370234, 370237

Abstract:

Methods and systems allowing a plurality of computer nodes to communicate using weighted transmission paths are provided. A load balancer distributes packets across weighted transmission paths according to transmission path quality, which is monitored and updated from time to time. As transmission quality on a specific transmission path decreases, the weight assigned to that transmission path is reduced. Similarly, weights may be increased if transmission quality improves. The weights assigned to various transmission paths may correspond to a relative number of packets to be transmitted on each respective transmission path. The transmission path for each packet can be selected based on the weights of the various transmission paths. Using weights based on transmission quality, transmission paths with higher transmission quality are used more often than transmission paths with lower transmission quality, resulting in more efficient communications.

US Patent:

7490151, Feb 10, 2009

Filed:

Sep 30, 2002

Appl. No.:

10/259494

Inventors:

Edward Colby Munger - Crownsville MD, US
Victor Larson - Fairfax VA, US
Michael Williamson - South Riding VA, US

Assignee:

Virnetx Inc. - Scotts Valley Drive CA

International Classification:

G06F 15/173

US Classification:

709225, 709229

Abstract:

A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer that allows a large number of nodes to communicate with a central node by partitioning the communication function between two separate entities.

US Patent:

7933990, Apr 26, 2011

Filed:

Aug 16, 2007

Appl. No.:

11/839969

Inventors:

Edmund Colby Munger - Crownsville MD, US
Douglas Charles Schmidt - Severna Park MD, US
Victor Larson - Fairfax VA, US
Michael Williamson - South Riding VA, US

Assignee:

Virnetx, Inc. - Scotts Valley CA

International Classification:

G06F 15/173

US Classification:

709225, 709229

Abstract:

A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer that allows a large number of nodes to communicate with a central node by partitioning the communication function between two separate entities.

US Patent:

8516117, Aug 20, 2013

Filed:

Apr 25, 2011

Appl. No.:

13/093785

Inventors:

Edmund Munger - Crownsville MD, US
Douglas Schmidt - Severna Park MD, US
Robert Short, III - Leesburg VA, US
Victor Larson - Fiarfax VA, US
Michael Williamson - South Riding VA, US

Assignee:

VirnetX, Inc. - Zephyr Cove NV

International Classification:

G06F 15/173

US Classification:

709225, 709229

Abstract:

A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer that allows a large number of nodes to communicate with a central node by partitioning the communication function between two separate entities.

US Patent:

20020161884, Oct 31, 2002

Filed:

Feb 26, 2002

Appl. No.:

10/082285

Inventors:

Edmund Munger - Crownsville MD, US
Douglas Schmidt - Severna Park MD, US
Robert Short - Leesburg VA, US
Victor Larson - Fairfax VA, US
Michael Williamson - South Riding VA, US

Assignee:

Science Applications International Corporation - San Diego CA

International Classification:

G06F015/173
G06F011/30
H04L009/00
H04L009/32
G06F012/14

US Classification:

709/224000, 713/200000

Abstract:

A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer that allows a large number of nodes to communicate with a central node by partitioning the communication fiction between two separate entities.

US Patent:

20030167342, Sep 4, 2003

Filed:

Mar 31, 2003

Appl. No.:

10/401888

Inventors:

Edmund Munger - Crownsville MD, US
Douglas Schmidt - Severna Park MD, US
Robert Short - Leesburg VA, US
Victor Larson - Fairfax VA, US
Michael Williamson - South Riding VA, US

Assignee:

Science Applications International Corporation - San Diego CA

International Classification:

G06F015/173

US Classification:

709/238000

Abstract:

A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer, that allows a large number of nodes to communicate with a central node by partitioning the communication function between two separate entities.

US Patent:

20080222415, Sep 11, 2008

Filed:

Oct 25, 2007

Appl. No.:

11/924460

Inventors:

Edmund Colby Munger - Crownsville MD, US
Douglas Charles Schmidt - Severna Park MD, US
Robert Dunham Short - Leesburg VA, US
Victor Larson - Fairfax VA, US
Michael Williamson - South Riding VA, US

Assignee:

VirnetX, Inc. - Scotts Valley CA

International Classification:

H04L 9/32

US Classification:

713168

Abstract:

A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer that allows a large number of nodes to communicate with a central node by partitioning the communication function between two separate entities.