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This document specifies the Internet Protocol (IP) which supports the interconnection of communication subnetworks. The document includes an introduction to IP with a model of operation, a definition of services provided to users, and a description of the architectural and environmental requirements. The protocol service interface and mechanisms are specified using an abstract state machine model. The Internet Protocol is designed to interconnect packet-switched communication subnetworks to form an internetwork. IP transmits blocks of data, called internet datagrams, from sources to destinations throughout the internet. Sources and destinations are hosts located on either the same subnetwork or connected subnetworks. IP is purposely limited in scope to provide the basic functions necessary to deliver a block of data. Each internet datagrams is an independent entity unrelated to any other internet datagram. IP does not create connections or logical circuits. IP has no mechanisms to promote data reliability, flow control, sequencing, or other services commonly found in virtual circuit protocols.
This document specifies the Transmission Control Protocol (TCP), a reliable connection-oriented transport protocol for use in packet-switched communication networks and internetworks. The document includes an overview with a model of operation, a description of services offered to users, and a description of the architectural and environmental requirements. The protocol service interfaces and mechanisms are specified using an extended state machine model. (Author).
Fundamental to the design of any computer communication system are the rules by which information is exchanged. Such rules are embodied in the protocols which must be followed if communication across a given network is to succeed. The discipline of protocol design has its own set of guiding principles for good engineering practice; these principles have been found be experience to yield better network designs if followed. For example, experience has taught that if the set of protocols used within a network have a certain hierarchical structure, then the overall network will be easier to design, easier to modify, and easier to understand. Such principles have often gone unstated, but their existence and their utilization have allowed network design to move beyond the black-art stage. This document is proposed as a baseline Reference Model serving the development of standard protocols for the Department of Defense. As such, it attempts to describe the design principles which are implicit in the protocols developed under the ARPANET and Internet programs; it also attempts to prescribe principles for the development of future protocols under the ongoing DoD Protocol Standardization Program managed by the Defense Communications Agency.
The primary purpose of the DDN Protocol Handbook in three volumes is to serve as a guide for those planning to implement the DoD suite of protocols on various computers to be attached to the DDN, including the ARPANET. For this reason tutorial information and auxiliary documents are included in addition to the protocol specifications themselves. All of this information has been collected into one set of documents that can be used as a source book for implementation purposes. This first volume contains an overview of the protocol standardization process and policies within the U.S. Department of Defense. It discusses the roles of the Defense Communications Agency (DCA) and the DDN Program Management Office (DDN PMO) with respect to this process. Detailed specifications for DoD military standard (MIL STD) computer communication protocols, which are required as part of the protocol suite in use on the Defense Data Network (DDN), are included. The Handbook also outlines the role of the DDN PMO in DDN configuration management, and provides instructions for obtaining additional protocol information.
The global threat landscape is constantly evolving and remaining competitive and modernizing our digital environment for great power competition is imperative for the Department of Defense. We must act now to secure our future.This Digital Modernization Strategy is the cornerstone for advancing our digital environment to afford the Joint Force a competitive advantage in the modern battlespace.Our approach is simple. We will increase technological capabilities across the Department and strengthen overall adoption of enterprise systems to expand the competitive space in the digital arena. We will achieve this through four strategic initiatives: innovation for advantage, optimization, resilient cybersecurity, and cultivation of talent.The Digital Modernization Strategy provides a roadmap to support implementation of the National Defense Strategy lines of effort through the lens of cloud, artificial intelligence, command, control and communications and cybersecurity.This approach will enable increased lethality for the Joint warfighter, empower new partnerships that will drive mission success, and implement new reforms enacted to improve capabilities across the information enterprise.The strategy also highlights two important elements that will create an enduring and outcome driven strategy. First, it articulates an enterprise view of the future where more common foundational technology is delivered across the DoD Components. Secondly, the strategy calls for a Management System that drives outcomes through a metric driven approach, tied to new DoD CIO authorities granted by Congress for both technology budgets and standards.As we modernize our digital environment across the Department, we must recognize now more than ever the importance of collaboration with our industry and academic partners. I expect the senior leaders of our Department, the Services, and the Joint Warfighting community to take the intent and guidance in this strategy and drive implementation to achieve results in support of our mission to Defend the Nation.
A file transfer service provides for transferring files between network hosts. This document, prepared by Digital Technology Inc. under subcontract to System Development Corporation, specifies a file transfer service for Department of Defense use. The file transfer service is organized as three categories of services: (1) Basic Services, (2) File Protocol Services, and (3) Virtual File System Services. This organization increases the flexibility of the file transfer service. Service primitives that implement the file transfer service are also defined. Finally, the document also describes the services that the file transfer service requires from lower network service layers. (Author).