Information security – Access control or authentication – Network
Reexamination Certificate
2011-08-02
2011-08-02
Zand, Kambiz (Department: 2434)
Information security
Access control or authentication
Network
C726S012000, C726S013000, C726S014000, C709S225000
Reexamination Certificate
active
07992199
ABSTRACT:
A communications scheme enables a central communications station to assist two communications systems located behind firewalls that prevent communication initiated from an external data network to establish direct communication with each other. In one embodiment, the systems separately establish communications with the central communications station and obtain from it the connection information (e.g., IP address, port, etc.) of the other. The systems then directly communicate with each other using the obtained connection information while pretending to be the central communications station. In another embodiment in which the firewalls include NAT devices that implement network address translation, the systems exchange connection information for establishing a new connection through the central communications station and then complete a three-way handshake with the assistance of the central communications station, thereby allowing the central communications station to remove itself from the communication.
REFERENCES:
patent: 4409590 (1983-10-01), Baker
patent: 4937855 (1990-06-01), McNab et al.
patent: 5195126 (1993-03-01), Carrier et al.
patent: 5604791 (1997-02-01), Lee
patent: 5835726 (1998-11-01), Shwed et al.
patent: 5940474 (1999-08-01), Ruus
patent: 5986571 (1999-11-01), Flick
patent: 6430268 (2002-08-01), Petite
patent: 6442241 (2002-08-01), Tsumpes
patent: 6931529 (2005-08-01), Kunzinger
patent: 6981278 (2005-12-01), Minnig et al.
patent: 7058973 (2006-06-01), Sultan
patent: 7480936 (2009-01-01), Lyon et al.
patent: 2001/0034842 (2001-10-01), Chacko et al.
patent: 2001/0056550 (2001-12-01), Lee
patent: 2002/0103998 (2002-08-01), DeBruine
patent: 2002/0120760 (2002-08-01), Kimchi et al.
patent: 2002/0152373 (2002-10-01), Sun et al.
patent: 2002/0186683 (2002-12-01), Buck et al.
patent: 2003/0195982 (2003-10-01), Motoyama et al.
patent: 2 325 548 (1998-11-01), None
patent: WO95/01041 (1995-01-01), None
Blum William R.
Romanczyk Piotr
Winick Steven J.
Honeywell International , Inc.
Husch Blackwell
Tabor Amare
Zand Kambiz
LandOfFree
Method for permitting two parties to establish connectivity... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for permitting two parties to establish connectivity..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for permitting two parties to establish connectivity... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2784808