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:
Sep. 29, 2009
Filed:
Mar. 09, 2006
David James Mccowan, Scituate, MA (US);
Jeffrey A. Kraemer, Wellesley, MA (US);
David James McCowan, Scituate, MA (US);
Jeffrey A. Kraemer, Wellesley, MA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A trace detector prevents network mapping and tracing by detecting an initial packet containing an initial time to live value that meets a first predetermined threshold range. The trace detector identifies a source address of the initial packet and adjusts a threshold time to live range for detection of at least one subsequent trace route or response packet associated with the source address of the initial packet. In response to detecting the subsequent packet(s), the trace detector processes the subsequent packet(s) associated with the source address of the initial packet according to a security policy to prevent a trace process originating the initial packet from tracing a network using the at least one subsequent packet.