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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).
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
Pork-knocking is extremely hazardous and deaths are not uncommon. Miners were crushed under falling trees, earth, and rock. [7] Drowning often occurs as mining operations are typically based on rivers to capture gold and diamond-laden sediments. The remoteness and wild terrain are a challenge for receiving emergency medical care. [3]
Từ điển bách khoa Việt Nam (lit: Encyclopaedic Dictionary of Vietnam) is a state-sponsored Vietnamese-language encyclopedia that was first published in 1995. It has four volumes consisting of 40,000 entries, the final of which was published in 2005. [1] The encyclopedia was republished in 2011.
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 ...
Different types of khoa are used for different preparations. Batti, meaning "rock", has 20% moisture by weight and is the hardest of the three types; it can be grated like cheese. It can be aged for up to a year, during which it develops a unique aroma and a mouldy outer surface. [3] Chikna ("slippery" or "squishy") khoa has 50% moisture. [3]
Chữ khoa đẩu is a term claimed by the Vietnamese pseudohistorian Đỗ Văn Xuyền to be an ancient, pre-Sinitic script for the Vietnamese language. Đỗ Văn Xuyền's works supposedly shows the script have been in use during the Hồng Bàng period, and it is believed to have disappeared later during the Chinese domination of Vietnam .
A post pounder, post driver, post rammer, post knocker or fence driver is a tool used for driving fence posts and similar items into land surfaces. It consists of a heavy steel pipe which is closed at one end and has handles welded onto the sides. It is normally used by one person, but larger versions may require two.