Packet communication system

Details Packet communication system Packet communication system

2007-02-01

2010-12-28

Chen, Shin-Hon (Department: 2431)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Packet header designating cryptographically protected data

C709S223000, C709S224000, C709S238000

Reexamination Certificate

active

07861080

ABSTRACT:
A packet communication system for effectively using network resources and for improving network operability. A transmission security policy database specifies the omission of header information attached when a transmission packet is capsulated, as a transmission security policy. A header-information omitting section omits the header information of the capsulated transmission packet. A packet transmission processing section adds a security header and a header for tunnel communication to the packet from which the header information has been omitted and transmits the packet. A receiving security policy database specifies that the header information has been omitted, as a receiving security policy. A header-information recovering section searches the receiving security policy database for a security policy for a received packet, and when recognizing that the received packet is a target packet from which the header information has been omitted, recovers the header information.

REFERENCES:
patent: 6574214 (2003-06-01), Khalil et al.
patent: 7215667 (2007-05-01), Davis
Patent Abstracts of Japan, Publication No. 2004-140539, Published May 13, 2004.
Patent Abstracts of Japan, Publication No. 2005-086223, Published Mar. 31, 2005.

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