IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
Design of new CYPHONIC adapter focused on packet sequential processing scheme
Ren GotoKazushige MatamaChihiro NishiwakiKatsuhiro Naito
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2023 Volume 12 Issue 5 Pages 194-199


The security policy changed from the traditional “castle and moat” approach to the zero-trust security model due to the recent change in work styles. The authors have been developing the overlay network protocol, called CYber PHysical Overlay Network over Internet Communication (CYPHONIC), to support the zero-trust security model easily. Additionally, we have designed an essential function of a gateway device called a CYPHONIC adapter because the proposed protocol requires devices to install a special client program. The initial implementation suffers from performance degradation of Transmission Control Protocol (TCP) due to order changes of packets during packet handling functions. This paper redesigns the adapter functions focused on the packet processing scheme of the CYPHONIC adapter and confirms the throughput improvement in standard protocols.

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© 2023 The Institute of Electronics, Information and Communication Engineers
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