The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2008
Filed:
Jan. 25, 2002
Ranga S. Ramanujan, Eden Prairie, MN (US);
Maher N. Kaddoura, Eden Prairie, MN (US);
Xiaoming Wu, Eden Prairie, MN (US);
Kevin S. Millikin, St. Paul, MN (US);
Ranga S. Ramanujan, Eden Prairie, MN (US);
Maher N. Kaddoura, Eden Prairie, MN (US);
Xiaoming Wu, Eden Prairie, MN (US);
Kevin S. Millikin, St. Paul, MN (US);
Architecture Technology Corp., Eden Prairie, MN (US);
Abstract
Automated techniques are described that provide continuous, uninterrupted operation of the secure packet tunnels in spite of access link flooding attacks. A system is described that includes a source device and a destination device coupled to a network. The source and destination devices may comprise, for example, edge routers that couple local area networks to the network via access links. The source device and the destination device establish a packet tunnel that has a source network address and a destination network address. Upon detecting a network attack, the destination device selects a new network address for at least one of the source network address and the destination network address and establishes a new packet tunnel with the source device. The source network address and the destination network address may comprise port numbers, Internet Protocol (IP) addresses, or other information describing the source and destination devices.