OSI模型的数据链路层(Data Link Layer)(即第2层)负责为数据包添加头和尾,为数据包可以转换为适合于局域网和广域网线路传输的二进制格式做准备。第2层可以分为两个功能子层,上子层是逻辑链路控制(Logical Link Control,LLC)子层,并在IEEE 802.2规范中定义,它与数据链路层之上的网络层(NetworkLayer)通信。LLC...
Security controls are parameters, safeguards and countermeasures implemented to protect various forms of data and infrastructure important to an organization.
Dive deep into the OSI Model to understand its seven layers, their functions, and how it defines the networking framework to implement protocols in seven layers.
In the layman's lexicon, security controls are safety measures. Yet, they're not one-size-fits-all. These are specialized configurations, practices, and technologies engineered to counteract potential threats. Imagine them as the different layers of a multi-tiered cake, each contributing its unique...
There are seven total OSI layers. The other six layers are the physical layer, the data link layer, the network layer, the transport layer, the session layer, and the presentation layer. What are common cybersecurity threats to the application layer? Viruses, keylogger malware, and Trojan hors...
Layered security refers to security systems that use multiple components to protect operations on multiple levels, or layers. This term can also be related to the term defense in depth, which is based on a slightly different idea where multiple strategies and resources are used to slow, block,...
A traditional firewall performs stateful inspection at layers three and four of the open systems interconnection (OSI) network model. It inspects the destination and source IP and the protocol and port of data packets, to determine whether to grant or deny access. ...
are used to ensure the security of communication between services in the device and between the device and external devices, prevent communication data from being tampered with during transmission, and improve system security. A digital certificate, which is similar to an electronic copy of a ...
Choose a builder that prioritizes website security. To learn more about how Wix protects your site, visit our Security Hub.03. Secure web hostingThere are many layers of protection necessary to secure a site, and reliable web hosting is an integral part of this. Secure web hosting is a ...
There are a few drawbacks when it comes to either not using secure authentication or any encryption -- or when deciding between TLS and other security protocols, such as IPsec. Here are a few examples: Because TLS operates at Layers 4 through 7 of the OSI model, as opposed to Layer 3,...