From the course: CCSP Cert Prep: 5 Cloud Security Operations Audio Review

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Network security

Network security

From the course: CCSP Cert Prep: 5 Cloud Security Operations Audio Review

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Network security

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- [Instructor] We need to design security controls to protect the confidentiality, integrity, and availability of the systems and information that use our networks. In Chapter 4 of the course, I discussed network security controls. Chief among these is the firewall. Firewalls are the foundation of network security. They provide our perimeter defense and allow us to create segmented networks. The primary purpose of a firewall is to control access to a network. They sit in between two, three, or more networks, and decide what can be allowed to pass in between those networks. We specify what's allowed to pass through a firewall by writing firewall rules that define what type of network traffic is allowed. Chief among these is the implicit deny rule. This rule says that any traffic that is not explicitly allowed by another firewall rule is automatically denied. Now in the cloud, we can't usually directly control the…

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