US 9,813,488 B2
Detecting virtual private network usage
Robert Glenn Deen, Simi Valley, CA (US); and Antony Tauber, Cambridge, MA (US)
Assigned to Comcast Cable Communications, LLC, Philadelphia, PA (US); and NBCUniversal Media, LLC, New York, NY (US)
Filed by COMCAST CABLE COMMUNICATIONS, LLC, Philadelphia, PA (US)
Filed on Jun. 25, 2014, as Appl. No. 14/314,880.
Prior Publication US 2015/0381452 A1, Dec. 31, 2015
Int. Cl. H04L 29/08 (2006.01); H04L 12/26 (2006.01)
CPC H04L 67/10 (2013.01) [H04L 43/0876 (2013.01); H04L 67/02 (2013.01); H04L 67/18 (2013.01); H04L 67/28 (2013.01)] 20 Claims
OG exemplary drawing
 
11. A method comprising:
receiving, by a first server, a first request from a first source address for a content resource;
providing a response to the first request, wherein the response comprises instructions configured to cause a computing device associated with the first source address to access a network-segment identification resource and retrieve first location-specific information;
receiving, from the first source address, the first location-specific information associated with the network-segment identification resource;
determining expected location-specific information based on the first source address; and
identifying the first source address as being associated with an intermediary based on determining that the received first location-specific information does not match the expected location-specific information.