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@@ -55,10 +55,12 @@ The final configuration groups the individual VLANs into distinct zones, forming
* **DMZ:** Contains the `dns` and `prod` networks for semi-trusted, exposed services. * **DMZ:** Contains the `dns` and `prod` networks for semi-trusted, exposed services.
* **IoT:** Contains the `iot` network. This is a low-trust zone for smart devices. * **IoT:** Contains the `iot` network. This is a low-trust zone for smart devices.
* **Management:** Contains the `management` network. This is a highly privileged, isolated zone for network infrastructure. * **Management:** Contains the `management` network. This is a highly privileged, isolated zone for network infrastructure.
![S3 File](http://localhost:4998/attachments/image-167d5cef9e79e622fff779f3671492a8a5a343ea.png?client=default&bucket=obsidian)
#### The Security Policy Matrix #### The Security Policy Matrix
The true power of this model is realized in the firewall's zone matrix, which dictates the default traffic flow between each zone. The true power of this model is realized in the firewall's zone matrix, which dictates the default traffic flow between each zone.
![S3 File](http://localhost:4998/attachments/image-4b9dbea5f7ceb0446d517305bc281b74e7f22ffc.png?client=default&bucket=obsidian)
This matrix enforces the desired security policy with clear, high-level rules: This matrix enforces the desired security policy with clear, high-level rules:
* **Complete IoT Isolation:** The `IoT` row shows that devices in this zone are blocked from initiating any communication with any other internal zone. Their only allowed path is out to the internet. * **Complete IoT Isolation:** The `IoT` row shows that devices in this zone are blocked from initiating any communication with any other internal zone. Their only allowed path is out to the internet.