A variety of networks operating in special security domains handle

classified information in the United States The United States government classification system is established under Executive Order 13526, the latest in a long series of executive orders on the topic of classified information beginning in 1951. Issued by President Barack Obama in 2009, E ...

sensitive but unclassified Sensitive But Unclassified (SBU) is a designation of information in the Federal government of the United States, United States federal government that, though unclassified, often requires FIPS 140-2#Level 2, strict controls over its distribution ...

information, while other specialized networks are reserved specifically for unclassified use by the same agencies. Some sites accessed from these networks have been referred to as "classified websites" in official communications, such as the American embassy "Amman's Classified Web Site at http://www.state.sgov.gov/pinea/amman/" and "Mexico City's Classified Web Site at http://www.state.sgov.gov/p/wha/mexicocity" Some of these trace back to the

Defense Data Network The Defense Data Network (DDN) was a computer networking effort of the United States Department of Defense from 1983 through 1995. It was based on ARPANET technology. History As an experiment, from 1971 to 1977, the Worldwide Military Command a ...

which split from the

Internet The Internet (or internet) is the Global network, global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a internetworking, network of networks ...

in 1983.

Networks

ClassNet

ClassNet domain names for the State Department take the form ".state.sgov.gov". Web pages for ClassNet may be developed on a "classified workstation". "Any workstation used for development purposes may not serve as the operational repository of images, files, or other information associated with a Web site." ClassNet is used for telecommunications, and its use is promoted by the Business Center Division. Two versions of the

State Messaging and Archival Retrieval Toolset State most commonly refers to: * State (polity), a centralized political organization that regulates law and society within a territory **Sovereign state, a sovereign polity in international law, commonly referred to as a country **Nation state, a ...

(SMART) database were created, one with a maximum rating of Sensitive but Unclassified (SBU) for OpenNet+, and one with a top rating of Secret for ClassNet.

DNI-U (OSIS)

OSIS was the name of an "unclassified network serving the intelligence community with

open-source intelligence Open source intelligence (OSINT) is the collection and analysis of data gathered from open sources (overt sources and publicly available information) to produce actionable intelligence. OSINT is primarily used in national security, law enforceme ...

". Originally used to refer both to the network and to the content it provided, it has since been decoupled, with the content named "Intelink-U", while the network continues as DNI-U. The network is maintained by the DNI-CIO Intelligence Community Enterprise Services office (ICES).

FBINet

FBINet is used internally by the

Federal Bureau of Investigation The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...

for handling information that is classified up to the Secret level. It may be used for investigative case file and intelligence pertaining to national security.

GWAN / NMIS network

The NRO Management Information System (NMIS) is a

computer network A computer network is a collection of communicating computers and other devices, such as printers and smart phones. In order to communicate, the computers and devices must be connected by wired media like copper cables, optical fibers, or b ...

used to distribute NRO data classified as Top Secret. It is also known as the Government Wide Area Network ( GWAN).

JWICS

The Joint Worldwide Intelligence Communications System (

JWICS The Joint Worldwide Intelligence Communication System (JWICS, ) is the United States government's secure intranet for the storage of top secret and sensitive compartmented information, primarily for use in intelligence. It is the most secure of th ...

) is a secure

TCP/IP The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suite are ...

network providing services such as

hypertext Hypertext is E-text, text displayed on a computer display or other electronic devices with references (hyperlinks) to other text that the reader can immediately access. Hypertext documents are interconnected by hyperlinks, which are typic ...

and

e-mail Electronic mail (usually shortened to email; alternatively hyphenated e-mail) is a method of transmitting and receiving Digital media, digital messages using electronics, electronic devices over a computer network. It was conceived in the ...

rated up to

Top Secret Classified information is confidential material that a government deems to be sensitive information which must be protected from unauthorized disclosure that requires special handling and dissemination controls. Access is restricted by law or ...

and SCI. JWICS replaced the

DSNET2 (Top Secret) and DSNET3 (SCI) networks.

NIPRNet

NIPRNet The Non-classified Internet Protocol (IP) Router Network (NIPRNet) is an IP network used to exchange unclassified information, including information subject to controls on distribution, among the private network's users. The NIPRNet also prov ...

is a low-security network reserved for unclassified information, such as regular Internet websites and firewalled but unclassified military websites.

NSANet

NSANet handles information rated

Sensitive Compartmented Information Sensitive compartmented information (SCI) is a type of United States classified information concerning or derived from sensitive intelligence sources, methods, or analytical processes. All SCI must be handled within formal access control systems ...

OpenNet

According to the U.S. Department of State Foreign Affairs Manual, "OpenNet is a physical and logical Internet Protocol (IP)-based global network that links the Department of State's Local Area Networks (LANs) domestically and abroad. The physical aspect of the network uses DTS circuits for posts abroad, FTS-2001-provided circuits, leased lines, and dial-up public switch networks. This includes interconnected hubs, routers, bridges, switches, and cables. The logical aspect of the network uses Integrated Enterprise Management System (NMS) and TCP/IP software, and other operational network applications. OpenNet is a Sensitive But Unclassified (SBU) network, which supports e-mail and data applications."

OpenNet+

OpenNet+ is described for State Department use as using standard .state.gov domain names, which must be requested through a State Department intranet site at http://intranet.state.gov/ds3081 . Web site development cannot be done on machines directly connected to this network. The "www" prefix is not to be used on OpenNet+, as it is reserved for use on the Internet. Intel GreenDoor

SIPRNet (DSNET1)

SIPRNet The Secret Internet Protocol Router Network (SIPRNet) is "a system of interconnected computer networks used by the U.S. Department of Defense and the U.S. Department of State to transmit classified information (up to and including information ...

is a medium-security network for handling information that is classified as Secret or below. It may be used to access classified websites run by the

Defense Intelligence Agency The Defense Intelligence Agency (DIA) is an intelligence agency and combat support agency of the United States Department of Defense (DoD) specializing in military intelligence. A component of the Department of Defense and the United States In ...

. SIPRNet replaced the

DSNET1 component.

Acronyms

* SI = Special / Secret Intelligence * TK is a codeword classification, standing for Talent Keyhole, meaning IMINT. * TS/SI/TK is often used as a blanket "entry level clearance" for conferences, etc., as it is one of the most carefully controlled and restricted. * B = BYEMAN (National Reconnaissance Office)

References

{{Reflist Military-themed websites United States government secrecy Military intelligence agencies