Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2004-03-19
2008-11-25
Bhattacharya, Sam (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C370S328000
Reexamination Certificate
active
07457626
ABSTRACT:
A method and mobile node are disclosed that facilitate persisting virtual private network structures across multiple network addresses assigned to the mobile node. The method includes initially setting up a virtual private network tunnel between a mobile node and a virtual private network tunnel server. Virtual private network structures that support the virtual private network tunnel are based upon a home address specified for the mobile node. When the mobile node changes addresses, the mobile node transmits a binding update to the virtual private network tunnel server specifying the new network address. Thereafter, a mapped relation is created from the new network address to the home address for the mobile node, thereby facilitating continued use of virtual private network structures that are based upon the home address for the mobile node.
REFERENCES:
patent: 6832322 (2004-12-01), Boden et al.
patent: 2002/0161905 (2002-10-01), Haverinen et al.
“Layer Two Tunneling Protocol Extensions (12tpext)”, retrieved from http://www.ietf.org/html.charters/12tpext-charter.html, last modified Dec. 13, 2004, 5 pages.
V. Rawat, et al., “Layer Two Tunneling Protocol (L2TP) over Frame Relay”, Network Working Group, Standards Track, Feb. 2001, 6 pages.
R. Verma, et al., “L2TP Disconnect Cause Information”, Network Working Group, Standards Track, Jul. 2001, 9 pages.
B. Patel, et al., “Securing L2TP Using IPsec” Network Working Group, Standards Track, Nov. 2001, 24 pages.
W. Palter, et al., “Layer-Two Tunneling Protocol Extensions for PPP Link Control Protocol Negotiation”, Dec. 2002, 9 pages.
Y. T'Joens, et al., “Layer Two Tunneling Protocol (L2TP): ATM Access Network Extensions”, Network Working Group, Standards Track, Jun. 2002, 16 pages.
A. Singh, et al., “Layer Two Tunneling Protocol (L2TP) Over ATM Adaptation Layer 5 (AAL5)”, Network Working Group, Standards Track, Aug. 2002, 11 pages.
E. Caves, et al., “Layer Two Tunneling Protocol ‘L2TP’ Management Information Base”, Network Working Group, Standards Track, Aug. 2002, 59 pages.
P. Calhoun, et al., “Layer Two Tunneling Protocol (L2TP) Differentiated Services Extension”, Network Working Group, Standards Track, Nov. 2002, 9 pages.
W. Townsley, “Layer Two Tunneling Protocol (L2TP) Internet Assigned Numbers Authority (IANA) Considerations Update”, Network Working Group, Best Current Practice, Dec. 2002, 5 pages.
I. Goyret, “Signaling of Modem-On-Hold Status in Layer 2 Tunneling Protocol (L2TP)”, Network Working Group, Standards Track, Jul. 2002, 11 pages.
W. Townsley, et al., “Layer 2 Tunneling Protocol (L2TP) Active Discovery Relay for PPP Over Ethernet (PPoE)”, Informational, Jun. 2004, 15 pages.
Braun, T. et al., “Secure Mobile IP Communication”; Local Computer Networks, 2001 Proceedings; LCN 2001; 26thAnnual IEEE Conference on Nov. 14-16, 2001, Piscataway, NJ, USA IEEE; Nov. 14, 2001; pp. 586-593; XP010584083.
Nuopponen S. Vaarala Netseal A: “Mobile IPv4 Coexistence with IPsec Remote Access Tunnelling; draft-nuopponen-vaarala-mipvpn-00”; IETF Standard-Working-Draft, Internet Engineering Task Force, IETF, CH, Jul. 19, 2002; pp. 1-14; XP015004648.
Berioli, M. et al.; “IP Mobility Support for IPsec-based Virtual Private Networks: an architectural Solution”; Globecom'03; 2003—IEEE Global Telecommunications Conference; Conference Proceedings, San Francisco, Dec. 1-5, 2003; pp. 1532-1536, XP010677551.
Byoung-Jo Kim et al.; “Simple mobility support for IPsec tunnel mode”; Vehicular Technology Conference, 2003; VTC 2003—Fall; 2003 IEEE 58thOrlando Florida Oct. 6-9, 2003; pp. 1999-2003, XP010701342.
Bhattacharya Sam
Microsoft Corporation
Wolf Greenfield & Sacks P.C.
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