US 11,909,771 B2
Role-based policy DNS response for network security user notifications
Darrin Joseph Miller, Marysville, OH (US); Kevin Patrick Regan, Farnham (GB); and Einar Nilsen-Nygaard, Waterside Kilmarnock (GB)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Jun. 1, 2020, as Appl. No. 16/889,102.
Prior Publication US 2021/0377314 A1, Dec. 2, 2021
Int. Cl. H04L 29/06 (2006.01); H04L 9/40 (2022.01); H04L 61/4511 (2022.01); H04L 61/5007 (2022.01)
CPC H04L 63/205 (2013.01) [H04L 61/4511 (2022.05); H04L 61/5007 (2022.05); H04L 63/102 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
storing, at a Domain Name System (DNS) device, data indicative of a role associated with a user device and data indicative of a policy setting a level of access of the user device to a responding device, wherein the data indicative of the role associated with the user device indicates a security level for the user device within an enterprise network environment;
obtaining, from the user device at the DNS device, a request for an Internet Protocol (IP) address of the responding device;
determining, at the DNS device based upon the request and the data indicative of the role associated with the user device, that the policy applies to the request; and
applying the policy in response to the determining, wherein applying the policy comprises providing, to the user device, data indicative of an IP address of a notification server to redirect the user device from the responding device to the notification server to provide the user device with an indication of the applying the policy by the DNS device.