12 Port Security
This chapter covers
- How Port Security protects against DHCP exhaustion and MAC flooding attacks
- Configuring Port Security on Cisco switches
- Fine-tuning Port Security configurations
Connections to an external network, such as the public internet, are obvious security concerns. However, internal network threats should not be overlooked. It could be a malware-infected device—an external threat from the internet that has taken hold in the internal network. Or it could be a malicious user; no one wants to view their own coworkers with suspicion, but ignoring such possibilities is asking for trouble.
Given these concerns, securing the points where users connect to the network—switches—is paramount. In this and the following two chapters, ...
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