Transcribed
Azure Firewall - Simply Explained
Jul 16, 2026 ·
13m 57s
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Azure Firewall - Simply Explained
Description
Cloud networks have no single front door, so a physical firewall at the edge no longer protects your workloads. This episode is for Azure admins and anyone new to Azure...
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Cloud networks have no single front door, so a physical firewall at the edge no longer protects your workloads. This episode is for Azure admins and anyone new to Azure networking, and explains what Azure Firewall does, how its SKUs, rules and hub-and-spoke placement work, and which setup to start with today.
In this episode
Key takeaways
Worth quoting
“You can't install a physical firewall box in a data center you don't own. And even if you could, it wouldn't help because there's no single door to guard anymore.” – Mirko Peters (01:37)
“Both directions need inspection. If a hacker gets into one workload, you don't want them roaming freely to others. That's how breaches spread.” – Mirko Peters (02:20)
Explore more on M365.FM
Follow and rate M365.FM in your podcast app, and join the free M365 community at m365con.net.
Become a supporter of this podcast: https://www.spreaker.com/podcast/m365-fm-microsoft-365-azure-cloud-power-platform-ai--6704921/support.
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In this episode
- 00:00 – A security desk for a building without walls
- 00:47 – What a firewall is
- 01:43 – Why cloud firewalls are different
- 03:01 – Introducing Azure Firewall
- 04:20 – The three SKUs: Basic, Standard and Premium
- 06:35 – Architecture and traffic flow
- 08:25 – Rules deep dive: NAT, network and application rules
- 10:22 – Advanced protection, cost tips and next steps
Key takeaways
- Azure Firewall is a fully managed, cloud-native firewall service with built-in high availability and autoscaling that inspects inbound, outbound and east-west traffic.
- Basic, Standard and Premium SKUs add capabilities step by step, from IP and port filtering to threat intelligence in deny mode, web categories, TLS inspection, IDPS and URL filtering.
- Traffic is only inspected if it passes through the firewall, so a hub-and-spoke design, correctly ordered NAT, network and application rules, and cost controls like the Log Analytics basic table plan matter as much as the SKU.
Worth quoting
“You can't install a physical firewall box in a data center you don't own. And even if you could, it wouldn't help because there's no single door to guard anymore.” – Mirko Peters (01:37)
“Both directions need inspection. If a hacker gets into one workload, you don't want them roaming freely to others. That's how breaches spread.” – Mirko Peters (02:20)
Explore more on M365.FM
- Episode page: the full episode with chapters, quotes and FAQ on Azure Firewall
- Microsoft Azure – the cloud platform whose virtual networks Azure Firewall protects across north-south and east-west traffic
- Azure Virtual WAN – the managed networking option for larger organizations, with Azure Firewall integrated into the hub
- Azure Automation – a cost tip: stop the firewall in non-production environments outside working hours
- Azure Private Link – mentioned briefly as private endpoints, letting trusted services skip firewall routing to cut processing charges
- Related episode: Azure Network Security Groups - Simply Explained
Follow and rate M365.FM in your podcast app, and join the free M365 community at m365con.net.
Become a supporter of this podcast: https://www.spreaker.com/podcast/m365-fm-microsoft-365-azure-cloud-power-platform-ai--6704921/support.
Information
| Author | Mirko Peters M365, Azure & AI |
| Organization | m365 FM |
| Website | www.m365.fm |
| Tags |
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