An overview of communication security
Communication and the network security domain deals with the security of voice and data communications through local area, Wide area, and Remote access networking. Candidates are expected to have knowledge in the areas of secure communications: securing networks, threats, vulnerabilities, attacks, and countermeasures to the communication networks and protocols that are used in remote access.
Observe the following illustration. We have already covered the application, presentation, and session layer in the OSI model. In this chapter, we will cover transport, networks, data links, and the physical layers of the OSI model:
Transport layer protocols and security
Transport layer does two things. One is to package the data given out by applications to a format that is suitable for transport over the network, and the other thing is to unpack the data received from the network and then format it suitable for applications.
In the transport layer, some of the important...