The number 443 may refer to:
The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite. It originated in the initial network implementation in which it complemented the Internet Protocol (IP). Therefore, the entire suite is commonly referred to as TCP/IP. TCP provides reliable, ordered, and error-checked delivery of a stream of octets (bytes) between applications running on hosts communicating via an IP network. Major internet applications such as the World Wide Web, email, remote administration, and file transfer rely on TCP, which is part of the Transport Layer of the TCP/IP suite. SSL/TLS often runs on top of TCP.
Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers. A broad variety of USB hardware exists, including 14 different connector types, of which USB-C is the most recent and the only one not currently deprecated since the release of USB 3.2.
A network switch is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device.
Network address translation (NAT) is a method of mapping an IP address space into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing device. The technique was originally used to bypass the need to assign a new address to every host when a network was moved, or when the upstream Internet service provider was replaced, but could not route the network's address space. It has become a popular and essential tool in conserving global address space in the face of IPv4 address exhaustion. One Internet-routable IP address of a NAT gateway can be used for an entire private network.
The Spanning Tree Protocol (STP) is a network protocol that builds a loop-free logical topology for Ethernet networks. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them. Spanning tree also allows a network design to include backup links providing fault tolerance if an active link fails.
Cumulative voting is a multiple-winner method intended to promote more proportional representation than winner-take-all elections such as block voting or first past the post. Cumulative voting is used frequently in corporate governance, where it is mandated by some (7) U.S. states (see e.g., Minn. Stat. Sec. 302A.111 subd. 2 .).
The Pilbara is a large, dry, thinly populated region in the north of Western Australia. It is known for its Aboriginal peoples; its ancient landscapes; the red earth; and its vast mineral deposits, in particular iron ore. It is also a global biodiversity hotspot for subterranean fauna.
netcat is a computer networking utility for reading from and writing to network connections using TCP or UDP. The command is designed to be a dependable back-end that can be used directly or easily driven by other programs and scripts. At the same time, it is a feature-rich network debugging and investigation tool, since it can produce almost any kind of connection its user could need and has a number of built-in capabilities.
In computer networks, a tunneling protocol is a communication protocol which allows for the movement of data from one network to another. It involves allowing private network communications to be sent across a public network through a process called encapsulation.
Sohar is the capital and largest city of the Al Batinah North Governorate in Oman. An ancient capital of the country that once served as an important Islamic port town, Suhar has also been credited as the mythical birthplace of Sinbad the Sailor.
DisplayPort (DP) is a digital display interface developed by a consortium of PC and chip manufacturers and standardized by the Video Electronics Standards Association (VESA). It is primarily used to connect a video source to a display device such as a computer monitor. It can also carry audio, USB, and other forms of data.
A restavek is a child in Haiti who is sold by their parents to work for a host household as a domestic servant because the parents lack the resources required to support the child. The term comes from the French language rester avec, "to stay with". Parents unable to care for children may send them to live with wealthier families, often their own relatives or friends. Often the children are from rural areas, and relatives who host restaveks live in more urban settings. The expectation is that the children will be given food and housing in exchange for doing housework. However, many restaveks live in poverty, may not receive proper education, and are at grave risk for physical, emotional, and sexual abuse.
Bortala is an autonomous prefecture for Mongol people in the northern middle of Xinjiang Uyghur Autonomous Region, Western China. It has an area of 27,000 km2 (10,000 sq mi). Bole is its capital. "Boro tala" comes from the Mongolian language and means "brown steppe".
Area codes 709 and 879 are the telephone area codes in the North American Numbering Plan (NANP) for the entire Canadian province of Newfoundland and Labrador.
In computer networking, a port or port number is a number assigned to uniquely identify a connection endpoint and to direct data to a specific service. At the software level, within an operating system, a port is a logical construct that identifies a specific process or a type of network service. A port at the software level is identified for each transport protocol and address combination by the port number assigned to it. The most common transport protocols that use port numbers are the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP); those port numbers are 16-bit unsigned numbers.
German submarine U-443 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
USS Fidelity (AM-443/MSO-443) was an Agile-class minesweeper. Laid down on 15 December 1952 at Higgins Inc., New Orleans, Louisiana; launched on 21 August 1953; commissioned on 19 January 1955; redesignated as an Ocean Minesweeper, MSO-443, 7 February 1955.
HTTP tunneling is used to create a network link between two computers in conditions of restricted network connectivity including firewalls, NATs and ACLs, among other restrictions. The tunnel is created by an intermediary called a proxy server which is usually located in a DMZ.