engleski

Network Security Issues in Regard to OSI Reference Model Layers

Today, almost all aspects of what we regard as data-in-storage and data-on-move is connected. Entire organizational infrastructure is networked and capable of inter-communication. Such capabilities offer easy reach and focus on data, which is considered a primary value to any organization or institution that possesses it. However, with the need for high data and communications availability also comes a potential risk. Various threats can compromise and breach data integrity and confidentiality by finding a way into or “taping” regular network channels. Computer networks based on TCP/IP stack use various layers of communication and underlying protocols respectively. Such design can provide independent fault tolerance and ensures compatibility of equipment made from different vendors as they all adhere to open standards. Here, we will address the issues of most common security threats on Layers 2, 3 and 4 of the OSI model, and their DoD model counterparts, as they are, by far, the most targeted by todays potential threats. Mitigation techniques and security policies will also be mentioned as they are vital part of both data confidentiality and integrity

Network security ; OSI Model ; IP protocol ; security issues

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