Title:
【発明の名称】保証されたシステム可用性を有する安全な通信のためのアジル・ネットワーク・プロトコル
Document Type and Number:
Japanese Patent JP2002529965
Kind Code:
A
Abstract:
A plurality of computer nodes communicates using seemingly random IP source and destination addresses and (optionally) a seemingly random discriminator field. 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 rejected. In addition to "hopping" of IP addresses and discriminator fields, hardware addresses such as Media Access Control addresses can be hopped. The hopped addresses are generated by random number generators having non-repeating sequence lengths that are easily determined a-priori, which can quickly jump ahead in sequence by an arbitrary number of random steps and which have the property that future random numbers are difficult to guess without knowing the random number generator's parameters. Synchronisation techniques can be used to re-establish synchronization between sending and receiving nodes. These techniques include a self-synchronization technique in which a sync field is transmitted as part of each packet, and a "checkpoint" scheme by which transmitting and receiving nodes can advance to a known point in their hopping schemes. A fast-packet reject technique based on the use of presence vectors is also described.
Inventors:
Manger Edmond Sea.
Savio Vincent Jay.
Short Robert Dunham The Third
Grigor Vergil Dee.
Chamid Douglas Charles
Savio Vincent Jay.
Short Robert Dunham The Third
Grigor Vergil Dee.
Chamid Douglas Charles
Application Number:
JP2000580350A
Publication Date:
September 10, 2002
Filing Date:
October 29, 1999
Export Citation:
Assignee:
Science Applications International Corporation
International Classes:
H04L9/08; H04L12/22; H04L12/56; H04L45/122; G09C1/00; H04L45/24; H04L47/43; (IPC1-7): H04L12/56; G09C1/00; H04L9/08; H04L12/22
Domestic Patent References:
| JPH09214556A | 1997-08-15 | |||
| JPH08507416A | 1996-08-06 | |||
| JPS62268225A | 1987-11-20 |
Attorney, Agent or Firm:
Shimizu Hatsushi (1 person outside)