Design and operation of overlay networks applicable to site-to-site communications

　IT systems in government ministry and agency often deploy a closed network to guarantee its system and information security. In most cases, the closed network is built using dedicated lines or closed-circuit services provided by telecommunication carriers. However, a closed network can be constructed with low cost and sufficient security by using overlay network technology. Furthermore, the closed network based on the overlay network technology has advantages such as flexible and quick configuration changes without changing a contract of dedicated lines.
　Depend on the purpose and configuration of the closed networks, the applicable technology and operation method of overlay networks are different to take advantage of overlay networking . With these points in mind, this document describes the design and operation of an overlay network.

　➢Design and operation of overlay networks applicable to site-to-site communications　PDF(JP)　DOCX(JP)