From the course: IT Security Foundations: Network Security
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Recognizing perimeter networks
From the course: IT Security Foundations: Network Security
Recognizing perimeter networks
- [Narrator] Malicious actors are constantly trying to gain access to our networks. One way to defend against a direct attack is by using a perimeter network. This provides a barrier between a trusted network and an untrusted network, such as the internet. The barrier isolates the internal network. Isolation occurs by configuring a demilitarized zone or screen subnet. Now, this is where the traffic is filtered by a firewall placed in between the outside world and the local area network. For example, the DMZ might be used to house a mail or a web server. The DMZ is also a great place to put a honeypot to trap hacking attempts. Now, the DMZ can be designed in a few ways. One way is as we see here which is called multi-home or three-legged firewall. Now, there are a couple concerns about this configuration. The firewall must be able to handle all the traffic going to the DMZ as well as the internal network. It's…
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