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

Claim 14:
15. A system comprising:
a processor, a computer readable memory, a non-transitory computer readable storage medium associated with a computing device, and program instructions executable by the computing device to cause the computing device to perform operations comprising:
receiving, from a client device and via a network device, a plurality of passcode packets as part of a request to be authenticated by the computing device;
recording a sequence comprising a plurality of respective transmission delay durations between the transmission of the plurality of the passcode packets;
recording a sequence of port identifiers corresponding to respective ports of the network device via which the plurality of passcode packets is received; and
authenticating the client device based on verifying the plurality of transmission delay durations against a sequence of delay durations predetermined to be provided by the client device between the transmission of the plurality of the passcode packets and verifying the sequence of port identifiers against a predetermined sequence of port identifiers, wherein the sequence of delay durations comprises a plurality of different delay durations.