Patent ID: 11876790
Assignee: THE BOEING COMPANY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A computer-implemented method comprising:
receiving, by an authentication device, from a client device and via a network device, a plurality of passcode packets as part of a request to be authenticated by the authentication device;
recording, by the authentication device, a sequence of port identifiers corresponding to respective ports of the network device via which the plurality of passcode packets is received and a plurality of respective transmission delay durations between the transmission of the plurality of the passcode packets; and
authenticating, by the authentication device, the client device based on verifying the sequence of port identifiers against a predetermined sequence of port identifiers and verifying the plurality of transmission delay durations against a plurality of delay durations predetermined to be provided by the client device between the transmission of the plurality of the passcode packets, wherein the plurality of delay durations comprise a plurality of different delay durations.