Information security – Access control or authentication – Network
Reexamination Certificate
2006-04-17
2009-08-25
Vu, Kimyen (Department: 2435)
Information security
Access control or authentication
Network
C726S011000, C709S219000, C709S229000
Reexamination Certificate
active
07581247
ABSTRACT:
A network address translation gateway provides normal network translation for IP datagrams traveling from a local area network using local IP addresses to an external network, but suspends source service address (port) translation when the port is reserved for a specific protocol, such as the ISAKMP “handshaking” protocol that is part of the IPSec protocol model. ISAKMP exchanges require both source and target computers to use the same service address (port). By providing a network interface that does not translate the source service address (port), this gateway enables the initiation and maintenance of secure, encrypted transmissions using IPSec protocol between a local area network using local IP addresses and servers on the internet.
REFERENCES:
patent: 5781550 (1998-07-01), Templin et al.
patent: 5825891 (1998-10-01), Levesque et al.
patent: 5898784 (1999-04-01), Kirby et al.
patent: 5940591 (1999-08-01), Boyle et al.
patent: 5983350 (1999-11-01), Minear et al.
patent: 6006259 (1999-12-01), Adelman et al.
patent: 6055236 (2000-04-01), Nessett et al.
patent: 6347376 (2002-02-01), Attwood et al.
patent: 6449251 (2002-09-01), Awadallah et al.
patent: 6615357 (2003-09-01), Boden et al.
patent: 6795917 (2004-09-01), Ylonen
patent: 7028335 (2006-04-01), Borella et al.
patent: 7058973 (2006-06-01), Sultan
Kent et al., “Security Architecture for the Internet Protocol”, Nov. 1998, pp. 1-66.
International Search Report; International Application No. PCT/US01/06257; International Filing Date: Feb. 27, 2001; Mailed on Jun. 14, 2001.
International Preliminary Examination Report; International Application No. PCT/US01/06257; International Filing Date; Feb. 27, 2001; Mailed on Jan. 15, 2002.
Stevens, Richard W.; “TCP/IP Illustrated, vol. 1—The Protocols” 1994; Addison Wesley; Section 3.3, 1st paragraph.
Supplementary European Search Report; Application No. EP 01 91 6265; Date of Search Mar. 4, 2004.
EPO Communication; Application No. 01 916 265.0-221; Nov. 25, 2004.
M Borella: ‘RSIP Support for End to end Ipsec’ Internet Article, [Online] Feb. 2000, pp. 1-19. http://www.watersprings.org/pub/id/draft-ietf-nat-rsip-ipsec-02.txt.
G. Montenegro: ‘Negotiated Address Reuse (NAR)’ Internet Article, http://www.watersprings/org/pub/id/draft-montenegro-aatn-nar-01.txt, Jan. 18, 1999.
D. Senie: “NAT Friendly Application Design Guidelines” Internet Article, Sep. 1999, http://www3.ietf.org/proceedings/99nov/I-D/draft-ietf-nat-app-guide-02.txt.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Symantec Operating Corporation
Vu Kimyen
Zee Edward
LandOfFree
Network address translation gateway for networks using... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Network address translation gateway for networks using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Network address translation gateway for networks using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4088911