From the course: CISSP Cert Prep (2021): 4 Communication and Network Security
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Security zones
From the course: CISSP Cert Prep (2021): 4 Communication and Network Security
Security zones
- [Instructor] Well-designed networks use firewalls to group systems into network segments based upon their security level. Let's talk about some of the more common security zones, and we're going to begin with the network border firewall. Typical border firewalls have three network interfaces because they connect three different security zones together. One interface connects to the internet or another untrusted network. This is the interface between the protected networks and the outside world. Generally speaking, firewalls allow many different kinds of connections out to this network when initiated by a system on more trusted networks, but they block most inbound connection attempts, allowing only those that meet the organization's security policy. A second network interface connects to the organization's intranet. This is the internal network where most systems reside. This intranet zone may be further subdivided into…
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