LYNXTUN

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2018
Okan, Galip Oral
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Lynxtun is a VPN solution that allows the creation of a secure tunnel between two hosts over an insecure network. The Lynxtun Protocol transmits fully encrypted datagrams with a fixed size and at a fixed interval using UDP/IP. Our custom authenticated encryption scheme uses the AES-256 block cipher and modified version of GCM mode in order to decrypt and authenticate datagrams efficiently. It ensures traffic flow confidentiality by maintaining a constant bitrate that does not depend on underlying communication. In this sense, it provides unobservable communication. This constitutes a difficult engineering problem. The protocol design allows implementations to fulfill this requirement. We analyze factors that influence realtime behavior and propose solutions to mitigate this. We developed a full implementation for the GNU/Linux operating system in the C programming language. Our implementation succeeds in performing dispatch operations at the correct time, with a tolerance on the order of microseconds, as we have verified empirically.
Extranets (Computer networks)., Computer networks, Wide area networks (Computer networks)., Virtual private networks (Computer networks)., Computer network protocols
http://etd.lib.metu.edu.tr/upload/12622560/index.pdf
https://hdl.handle.net/11511/27642
Graduate School of Informatics, Thesis

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Citation Formats
G. O. Okan, “LYNXTUN,” M.S. - Master of Science, Middle East Technical University, 2018.
METU IIS - Integrated Information Service open@metu.edu.tr