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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).
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for bidirectional traffic. TCP usually uses port numbers that match the services of the corresponding UDP implementations, if they exist, and vice versa.
The British seizure of Kalinjar proved to be a great watershed, transferring the legacy of the old aristocracy into the hands of the new bureaucracy of officials, who showed their loyalty to British imperialism by damaging the captured fort. The damages caused to the fort can still be seen on its walls and open spaces. [citation needed]
According to Constitution of India, maritime transport is to be administered by both the Central and the State governments. While the central government's shipping ministry administers the major ports, the minor and intermediate ports are administered by the relevant departments or ministries in the nine coastal states of Andhra Pradesh, Goa, Gujarat, Karnataka, Kerala, Maharashtra, Odisha ...
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Stoplogs are specialized bulkheads that are dropped into premade slots or guides in a channel or control structure, while flashboards are bulkheads that are placed on the crest or top of a channel wall or control structure. Flashboards are sometimes designed to break away under high flow conditions and thus to provide only a temporary diversion.
The Indian Railway Stores Service (IRSS) is one of the Group A central engineering services of the Government of India.The officers of this service are procurement and logistics specialists, contract managers on the Indian Railways, providers of logistics for the transportation of material from and within various railways as well as the planners and maintainers of the intelligent warehousing ...
The system introduced on IBM PC computers sends 8-bit byte codes (usually displayed as two hexadecimal digits) to a specified I/O port (usually 80 hex) during startup, some indicating a stage in the startup procedure, others identifying errors. The description for each code must be looked up in a table for the particular BIOS.