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:
Nov. 16, 2010
Filed:
Mar. 24, 2004
Dennis Cox, Austin, TX (US);
Kip Mcclanahan, Austin, TX (US);
Dennis Cox, Austin, TX (US);
Kip McClanahan, Austin, TX (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method is provided for blocking attacks on a private network (). The method is implemented by a routing device () interconnecting the private network () to a public network (). The method includes analyzing an incoming data packet from the public network (). The incoming data packet is then matched against known patterns where the known patterns are associated with known forms of attack on the private network (). A source of the data packet is then identified as malicious or non-malicious based upon the matching. In one embodiment, one of the known forms of attack is a denial of service attack and an associated known pattern is unacknowledged data packets. In another embodiment, one of the known forms of attack is an address spoofing attack and an associated known pattern is a data packet having a source address matching an internal address of the private network ().