port knocking

noun

A means of securing ports on a firewall by requiring the host to attempt to connect to a prespecified sequence of closed ports before being allowed access to the desired port.

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Meanings

nounport knocking (uncountable)
  1. uncountablecomputingA means of securing ports on a firewall by requiring the host to attempt to connect to a prespecified sequence of closed ports before being allowed access to the desired port.
Cite this entry
APA

port knocking. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/port%20knocking

MLA

“port knocking.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/port%20knocking. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “port knocking,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/port%20knocking.

Source: port knocking on Wiktionary, CC BY-SA 4.0.