Defense Data Network

Defense Data Network

The Defense Data Network (DDN) was a computer networking effort of the United States Department of Defense from 1983 through 1995.[1]

History

In 1975, the Defense Communication Agency (DCA) took over operation of the ARPANET as it became an operational tool instead of a research project. In 1983, plans for a new generation of the Automatic Digital Network (Autodin II) were canceled. Instead, a separate network to connect military installations called MILNET was split off the ARPANET. The ARPANET would be used as an Internet backbone for researchers, but be slowly phased out. Both networks carried unclassified information, and were connected at a small number of points which would allow total separation in the event of an emergency. The DCA used the Defense Data Network (DDN) as the program name for these network programs.[2]

As a large-scale, private internet, the DDN provided Internet Protocol connectivity across the United States and to US military bases abroad. Throughout the 1980s it expanded as a set of four parallel military networks, each at a different security level. These networks transitioned to become the NIPRNET, SIPRNET, and JWICS networks in the 1990s.

The four DDN subnetworks were:

  • Military Network (MILNET) for Unclassified traffic
  • Defense Secure Network One (DSNET 1) for Secret traffic
  • Defense Secure Network Two (DSNET 2) for Top Secret traffic
  • Defense Secure Network Three (DSNET 3) for Top Secret/Sensitive Compartmented Information (TS/SCI)

MILNET and DSNET 1 were common user networks, much like the public Internet, but DSNET 2 was dedicated to supporting the Worldwide Military Command and Control System (WWMCCS) and DSNET 3 was dedicated to supporting the DOD Intelligence Information System (DODIIS).

References

  1. ^ John Pike, Maintained by Steven Aftergood (February 11, 2000). "Defense Data Network (DDN), Defense Secure Network (DSNET)". Federation of American Scientists. http://www.fas.org/irp/program/disseminate/ddn.htm. Retrieved April 9, 2011. 
  2. ^ Fritz E. Froehlich; Allen Kent (1990). "ARPANET, the Defense Data Network, and Internet". The Froehlich/Kent Encyclopedia of Telecommunications. 1. CRC Press. pp. 341–375. ISBN 9780824729004. http://books.google.com/books?id=gaRBTHdUKmgC&pg=PA341. 

External links



Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Defense Data Network — Component of the Defense Communications System used for switching Department of Defense automated data processing systems. Also called DDN. See also Defense Communications System; Defense Switched Network …   Military dictionary

  • Defense Data Network — worldwide communications network for the U.S. Department of Defense and U.S. Military (Telecommunications) …   English contemporary dictionary

  • Defense Switched Network — Component of the Defense Communications System that handles Department of Defense voice, data, and video communications. Also called DSN. See also Defense Communications System; Defense Data Network …   Military dictionary

  • Defense Switched Network — The Defense Switched Network (DSN) is a primary information transfer network for the Defense Information Systems Network (DISN). The DSN provides the worldwide non secure voice, secure voice, data, facsimile, and video teleconferencing services… …   Wikipedia

  • Joint Data Network — The Joint Data Network (JDN) is an interconnected network of Joint Tactical Information Distribution System (JTIDS)–based systems, which links air and missile defense command and control and weapons systems across United States armed forces. It… …   Wikipedia

  • Defense Communications System — Department of Defense long haul voice, data, and record traffic system which includes the Defense Data Network, Defense Satellite Communications System, and Defense Switched Network. Also called DCS. See also Defense Data Network; Defense… …   Military dictionary

  • Defense Information Systems Agency — Seal …   Wikipedia

  • Network centrics — is the emerging discipline of applying and enhancing networking and computing concepts and implementation technologies in a variety of social, business, content distribution, and communication domains involving interactions amongst the domain… …   Wikipedia

  • Network-centric warfare — Warfare Military history Eras Prehistoric Ancient Medieval Gunpowder Industrial …   Wikipedia

  • Network centric warfare — Le Network Centric Warfare est un concept popularisé sous le nom de guerre en réseau et qui est apparu à la fin du XXe siècle dans les doctrines militaires. Terme d origine américaine, il décrit une manière de conduire des opérations… …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”