overlayvõrk

Overlayvõrk, also known as overlay network, is a computer network that is built on top of another network. The underlying network is called the underlay network, which can be any type of network, such as the Internet, a local area network (LAN), or a wide area network (WAN). The overlay network uses virtual links, called tunnels, to interconnect nodes that are not directly connected in the underlay network.

Overlay networks are commonly used to create virtual private networks (VPNs), software-defined networks (SDNs), and peer-to-peer (P2P) networks. They provide several benefits, including improved security, flexibility, and scalability. For example, overlay networks can be used to create secure connections between nodes that are located in different geographic locations, or to create a virtual network that can be easily reconfigured to meet changing requirements.

However, overlay networks also have some limitations. They can introduce additional latency and overhead, as data must be encapsulated and decapsulated at each node in the overlay network. Additionally, overlay networks can be vulnerable to certain types of attacks, such as man-in-the-middle attacks, if proper security measures are not in place.

In summary, overlayvõrk is a type of computer network that is built on top of another network, using virtual links to interconnect nodes that are not directly connected in the underlay network. It provides several benefits, but also has some limitations.