Defense Advanced Research Projects AgencyTagged Content List

Network Technology

Relating to nodes in a connected architecture

Showing 89 results for Networking RSS
01/01/2014

On March 19-20, 2014, 15 teams from around the United States participated in the final event of the DARPA Spectrum Challenge, a competition designed to encourage development of programmable radios that can deliver high-priority transmissions in congested and contested spectrum environments.

01/01/1973
In a seminal moment in the development of the Internet, DARPA’s Robert Kahn (who joined the Information Processing Techniques Office as a program manager in 1972) asked Vinton Cerf of Stanford University to collaborate on a project to develop new communications protocols for sending packets of data across the ARPANET. That query resulted in the creation of the Transmission Control Protocol (TCP) and the Internet Protocol (IP), most often seen together as TCP/IP. These protocols remain a mainstay of the Internet’s underlying technical foundation.
01/01/1968

Conceived by Douglas Engelbart and developed by him and colleagues at the Stanford Research Institute (SRI), the groundbreaking computer framework known as oN-Line System (NLS), jointly funded by ARPA and the Air Force, evolved throughout the decade. In what became known as "The Mother of All Demos"—because it demonstrated the revolutionary features of NLS as well as never-before-seen video presentation technologies—Engelbart unveiled NLS in San Francisco on December 9, 1968, to a large audience at the Fall Joint Computer Conference. Engelbart's terminal was linked to a large-format video projection system loaned by the NASA Ames Research Center and via telephone lines to a SDS 940 computer (designed specifically for time-sharing among multiple users) 30 miles away in Menlo Park, California, at the Augmentation Research Center, which Engelbart founded at SRI. On a 22-foot-high screen with video insets, the audience could see Engelbart manipulate the mouse and watch as members of his team in Menlo Park joined in the presentation.

With the arrival of the ARPA Network at SRI in 1969, the time-sharing technology that seemed practical with a small number of users became impractical over a distributed network. NLS, however, opened pathways toward today’s astounding range of information technologies.

01/22/2013
The Department of Defense (DoD) maintains one of the largest computer networks in the world. The network follows DoD personnel across the globe collecting, transferring and processing information in forms as diverse as data warehouses, in-the-field mobile devices and mission computers on board F-18’s. This network is also constantly changing in size and shape as new missions are undertaken and new technology is deployed. In military terms, that means the cyber terrain of the DoD network is constantly shifting.
03/18/2013
In areas lacking trustworthy communications infrastructure, deployed servicemembers rely on wireless devices to perform double duty: they not only provide access to the network; they are the network. Protocols for these networks require nodes to coordinate among themselves to manage resources, such as spectrum and power, and determine the best configurations to enable sharing of information. A problem with these protocols is that they implicitly trust all information shared about the security and operational state of each node, and the network as a whole. Consequently, inaccurate control or security information can quickly render the network unusable. This shortcoming could put productivity and mission success at risk as use of military wireless systems increases.