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# CORE Documentation
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## Introduction
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CORE (Common Open Research Emulator) is a tool for building virtual networks. As an emulator, CORE builds a
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representation of a real computer network that runs in real time, as opposed to simulation, where abstract models are
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used. The live-running emulation can be connected to physical networks and routers. It provides an environment for
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running real applications and protocols, taking advantage of tools provided by the Linux operating system.
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CORE is typically used for network and protocol research, demonstrations, application and platform testing, evaluating
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networking scenarios, security studies, and increasing the size of physical test networks.
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### Key Features
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* Efficient and scalable
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* Runs applications and protocols without modification
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* Drag and drop GUI
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* Highly customizable
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## Topics
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| Topic | Description|
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|-------|------------|
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|[Installation](install.md)|How to install CORE and its requirements|
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|[Architecture](architecture.md)|Overview of the architecture|
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|[Node Types](nodetypes.md)|Overview of node types supported within CORE|
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|[GUI](gui.md)|How to use the GUI|
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|[(BETA) Python GUI](pygui.md)|How to use the BETA python based GUI|
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|[Python API](python.md)|Covers how to control core directly using python|
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|[gRPC API](grpc.md)|Covers how control core using gRPC|
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|[Distributed](distributed.md)|Details for running CORE across multiple servers|
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|[Control Network](ctrlnet.md)|How to use control networks to communicate with nodes from host|
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|[Services](services.md)|Overview of provided services and creating custom ones|
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|[EMANE](emane.md)|Overview of EMANE integration and integrating custom EMANE models|
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|[Performance](performance.md)|Notes on performance when using CORE|
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|[Developers Guide](devguide.md)|Overview on how to contribute to CORE|
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## Credits
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The CORE project was derived from the open source IMUNES project from the University of Zagreb in 2004. In 2006,
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changes for CORE were released back to that project, some items of which were adopted. Marko Zec <zec@fer.hr> is the
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primary developer from the University of Zagreb responsible for the IMUNES (GUI) and VirtNet (kernel) projects. Ana
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Kukec and Miljenko Mikuc are known contributors.
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Jeff Ahrenholz has been the primary Boeing developer of CORE, and has written this manual. Tom Goff designed the
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Python framework and has made significant contributions. Claudiu Danilov, Rod Santiago, Kevin Larson, Gary Pei,
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Phil Spagnolo, and Ian Chakeres have contributed code to CORE. Dan Mackley helped develop the CORE API, originally to
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interface with a simulator. Jae Kim and Tom Henderson have supervised the project and provided direction.
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Copyright (c) 2005-2020, the Boeing Company.
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