Securing Communication Channels

Network security has traditionally focused primarily on ensuring availability. However, as we saw in Chapter 10, there is a lot of critical information now being transferred over networks that need to be secured. This is a multifaceted task that requires a thorough understanding of both the physical and virtual elements within an IT architecture. This chapter delves into the security considerations across various layers and components of a network, ensuring robust protection against vulnerabilities and potential breaches. You will also review the other core security concepts of confidentiality, integrity, availability, authenticity, and non-repudiation that will all come into play for networks.

Communication channels within a network, such as voice, multimedia collaboration, and remote access, must also be secured to protect data integrity and confidentiality. In this chapter, you will see what this means for VoIP systems, multimedia collaboration...