8/17/2023 0 Comments Waf network![]() This is the layer where the application interacts. Let's also take a look at what role each layer plays. ![]() Let's take a real look at what kind of hierarchy there is.įor example, a network device running at the network layer is called an 元 switch, which is derived from this OSI reference model. Currently, TCP/IP, a type of network similar to the OSI reference model, is widely used, but if you understand the OSI reference model, it is easier to understand what devices and services exist at each layer of the network and security, and what their roles are. Therefore, there was a movement to unify network types internationally, and the OSI reference model was created. In the old days, each network equipment manufacturer decided the type of network freely, so it was often impossible to communicate with equipment from different manufacturers, which was a problem. The OSI reference model is an internationally defined network type (model) that provides an easy to understand understanding of networks. Before that, let's take a closer look at what the OSI reference model is and why you need a WAF. The role of the WAF in protecting the seven layers of the OSI reference model will be explained in detail. a) Defense of each layer of the OSI reference model.
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