US 12,323,422 B2
Secure remote access to devices on overlapping subnets
Michael Freed, Pleasanton, CA (US); Madeline Y. Bernstein, Honalulu, HI (US); Ruben Erick Escolero, Piedmont, CA (US); and Elango Ganesan, Palo Alto, CA (US)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Mar. 7, 2022, as Appl. No. 17/687,838.
Claims priority of provisional application 63/237,309, filed on Aug. 26, 2021.
Prior Publication US 2023/0067223 A1, Mar. 2, 2023
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/0876 (2013.01) [H04L 63/0236 (2013.01); H04L 63/0281 (2013.01); H04L 63/083 (2013.01); H04L 63/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, at a remote access manager, an access request from a client to remotely access a device that is part of a subnet on a local network, wherein the local network comprises a different subnet for other devices that have some overlap in Internet Protocol addresses with devices that are part of the subnet;
generating, by the remote access manager, a universally unique identifier for the access request;
sending, by the remote access manager, a response to the client having a one-time use domain name system name that is based on the universally unique identifier; and
communicating, by the remote access manager, with a web proxy to authorize the client to remotely access the device.