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Training Camp • Cybersecurity Glossary
An overlay network is a logical network that is built on top of an existing network infrastructure, allowing for additional services such as virtualization, tunneling, or security features to be implemented without necessarily altering the underlying physical network.
Overlay Network Definition: An overlay network is a logical network that is built on top of an existing network infrastructure, allowing for additional services such as virtualization, tunneling, or security features to be implemented without necessarily altering the underlying physical network.
An overlay network refers to a virtual network created on top of an existing network infrastructure, enabling additional services or security measures to be implemented without modifying the underlying network. It allows for the segmentation and isolation of specific network traffic, as well as the deployment of network functions such as encryption, access control, or routing protocols. Overlay networks are commonly used in cloud environments, virtual private networks (VPNs), and software-defined networking (SDN) to enhance network scalability, flexibility, and security.
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