Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular node for directing data and applying cryptography
Reexamination Certificate
2008-03-11
2008-03-11
Smithers, Matthew B (Department: 2137)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular node for directing data and applying cryptography
C726S014000
Reexamination Certificate
active
07343485
ABSTRACT:
A method may involve: maintaining protocol status information for a network protocol, where the protocol status information includes protocol information generated by a protocol server and network traffic information indicative of how messages are conveyed from the protocol client to a network, and updating the protocol status information in response to intercepting a protocol message being conveyed between a protocol client and a protocol server. For example, the network protocol can be DHCP (Dynamic Host Configuration Protocol) and the protocol status information can be updated to include an IP (Internet Protocol) address assigned to the protocol client by the protocol server in the protocol message. Such a method may inhibit the misuse of one or more network protocols and/or attacks on protocol servers.
REFERENCES:
patent: 5550984 (1996-08-01), Gelb
patent: 6070187 (2000-05-01), Subramaniam et al.
patent: 6108786 (2000-08-01), Knowlson
patent: 7134012 (2006-11-01), Doyle et al.
patent: 2002/0032871 (2002-03-01), Malan et al.
patent: 2003/0002436 (2003-01-01), Anderson et al.
patent: 2004/0064559 (2004-04-01), Kupst et al.
patent: 2004/0071164 (2004-04-01), Baum
patent: 2004/0258074 (2004-12-01), Williams et al.
patent: 2005/0027837 (2005-02-01), Roese et al.
M. Patrick, Motorola BCS, Network Working Group—Standards Track, “DHCP Relay Agent Information Option,” Jan. 2001, pp. 1-14, http://www.freesoft.org/CIE/RFC/Orig/rfe3046.txt.
“Chapter 17: Understanding and Configuring DHCP Snooping,” Cisco IOS Software Configuration Guide—Release 12.1(12c)EW, Jul. 11, 2003, pp. 17-1-17-4.
Configuring Unicast Reverse Path Forwarding; Aug. 21, 2003; 16 pages; http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fsecur—c/fothersf/scfrpf.htm (printed Oct. 18. 2004).
Understanding and Configuring IGMP Snooping and Filtering; Cisco IOS Software Configuration Guide—Release 12.1(12c)EW, Jul. 11, 2003, Updated Aug. 24, 2004; 16 pages; http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/12—1—12/config/multi.pdf (printed Oct. 22, 2004).
Dobrota Silviu
Huang Dehua
Johnson Richard A.
Sweeney Adam J.
Brock Brenna A.
Campbell Stephenson LLP
Cisco Technology Inc.
Smithers Matthew B
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