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In computer networking, port knocking is a method of externally opening ports on a firewall by generating a connection attempt on a set of prespecified closed ports. Once a correct sequence of connection attempts is received, the firewall rules are dynamically modified to allow the host which sent the connection attempts to connect over specific port(s).
Pork-knockers are freelance Guyanese prospectors who mine for diamonds and gold in the alluvial plains of the Guyanese interior. Pork-knockers have been responsible for discovering large deposits of gold and diamonds. The name "pork-knockers" refers to their regular diet of pickled pork of wild pig that is often eaten at the end of the day. [1]
Door knocker, item of door furniture that allows people outside to alert those inside; Knocker-up, profession in England and Ireland before alarm clocks were affordable or reliable; Port knocker, to externally open ports on a firewall; Sanctuary Knocker, ornamental knocker on the door of a cathedral
He called Parkinson into his dressing room where they had what Hallstrom recalls as "a huge screaming fight." When Parkinson stormed out in a huff, one of Barker's assistants chased after her and ...
Car knocker Railroad car repair-person or car inspector. The term is derived from a worker who taps or "knocks" on railroad equipment to check its soundness. [62] Centennials Union Pacific's EMD DDA40X locomotives. World's most powerful diesel locomotives, delivered in 1969, the year of Union Pacific's centennial. [63] Centipede
A door knocker is an item of door furniture that allows people outside a house or other dwelling or building to alert those inside to their presence. A door knocker has a part fixed to the door, and a part (usually metal) which is attached to the door by a hinge, and may be lifted and used to strike a plate fitted to the door, or the door itself, making a noise.
Move over, Wordle, Connections and Mini Crossword—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity ...
A port knock setup needs a firewall that logs every port access, a daemon which has means to change the firewall rules (!), and, depending on how complex the knock sequences should be, cryptographic hash generators, handling of multiple knock attempts coming in at the same time, etc.