📚 Auto-publish: Add/update 4 blog posts
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Generated on: Tue Sep 23 06:14:45 UTC 2025 Source: md-personal repository
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* **DMZ:** Contains the `dns` and `prod` networks for semi-trusted, exposed services.
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* **IoT:** Contains the `iot` network. This is a low-trust zone for smart devices.
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* **Management:** Contains the `management` network. This is a highly privileged, isolated zone for network infrastructure.
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#### The Security Policy Matrix
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The true power of this model is realized in the firewall's zone matrix, which dictates the default traffic flow between each zone.
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This matrix enforces the desired security policy with clear, high-level rules:
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* **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.
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