Fortigate Vm Sizing Azure ^new^

This guide covers the critical factors (throughput, instance types, disk configuration, and scaling options) to ensure you select the right SKU and VM size for your deployment.

Mistake #4: Not Testing with Real Packet Sizes

• Why it fails: Datasheet uses 1518-byte packets. Cloud traffic is often 64-byte ACKs (gaming, VoIP, Redis). Small packets kill PPS capacity.
• Fix: Use iPerf3 in Azure with -l 64 for worst-case PPS test.

Part 4: Licensing and Its Impact on Sizing

FortiGate licensing in Azure directly affects what VM sizes you can deploy. fortigate vm sizing azure

4. Concurrent Sessions & New Sessions Per Second

• Azure limitation: Even with large RAM, the Azure virtual NIC queue depth limits new connections.
• Standard target: FG-VM02: 500k concurrent / 20k new/sec. FG-VM08: 2M concurrent / 50k new/sec.
• If you exceed 1M sessions aggressively, move to a VM with Accelerated Networking enabled (more on that later).

Conclusion

Mastering FortiGate VM Sizing on Azure: A Complete Guide Choosing the right size for your FortiGate VM on Microsoft Azure is a critical balancing act between security performance and cost optimization. Unlike physical appliances, virtual machines (VMs) share hardware resources, meaning your choice of Azure VM instance series directly impacts throughput, latency, and your firewall’s overall efficacy. 1. Understanding Azure VM Series for FortiGate This guide covers the critical factors (throughput, instance

Best Practices for FortiGate VM Deployment in Azure Why it fails: Datasheet uses 1518-byte packets

Example 2: Site-to-Site VPN Hub (500 Mbps, 200 VPN tunnels)

• Required: IPsec + minimal inspection
• Recommendation: Standard_F4s_v2 (4 vCPUs) + VM04 license
• Why F-series: Better AES-NI crypto performance than D-series.