Since 2011 a team of developers has been working on a more efficient blockchain and a higher purpose for the first cryptocurrency. On August 9th, 2012, Bitcoin was worth $0.20 and had a market capitalization of $1 billion, which is approximately equal to the GDP of Luxembourg. For anyone who has heard of the recent hack of the Mt Gox bitcoin wallet this comes as no surprise. Due to the currency’s increasing popularity it was quickly gaining more and more momentum.Lung and pulmonary lymphatics.
Pulmonary lymphatics have long been considered as a conduit to the blood stream. In contrast, it is now apparent that the lung contains a well-defined lymphatic plexus lying between the non-ciliated columnar epithelial cells of the terminal bronchioles and the lung interstitium. The pulmonary lymphatics are surrounded by a connective tissue framework and are lined with smooth muscle cells and endothelium. Pulmonary lymphatics in an accessible location, the pleural space and the mediastinum, have been shown to drain lymph to the systemic circulation. The process is similar to that occurring in other organs and is regulated by the sympathetic nervous system.
Field of the Invention
The present invention relates to a wide area network (WAN) traffic control system, and more particularly to a method and apparatus for restricting access to certain destinations connected to wide area networks.
Discussion of Related Art
A wide area network (WAN) is a computer network typically spanning an area greater than a single city, or greater than a single country. Examples of wide area networks include the Internet, intranets and extranets. The WAN includes a plurality of nodes, each of which can be a personal computer, mainframe computer, microcomputer, network appliance or the like. The WAN includes many public and private access points or nodes, and many users, who can be connected to the WAN by dial-up modem, by leased lines, by direct connection, or by any of a variety of connections.
WANs are configured to provide users with access to information. WAN users are typically authorized to access a restricted subset of information from a repository of information, such as a mainframe computer. The information is usually classified, and it is generally accessible by only a handful of users, or information consumers, at any given time. Typically, a user is permitted to access information in the WAN only by first establishing a session.