Vm Sizing Azure Upd: Fortigate
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
To give you a better recommendation, could you tell me: What is your total internet bandwidth (Mbps or Gbps)? Will you be doing SSL inspection for most traffic? Are you deploying in High Availability (HA) mode?
Often has lower NIC counts (e.g., F1/F2 may only support 2 NICs).
The VM01 can support basic needs, but requires 4GB RAM for optimal operation if UTM features are enabled. Scenario B: Medium Enterprise/SD-WAN Hub (High Intensity)
The FortiGate-VM runs the same FortiOS operating system as physical Fortinet appliances. However, instead of proprietary FortiASIC chips (SPUs) accelerating traffic processing, the cloud virtual appliance relies entirely on vCPUs, system memory, and Azure's underlying hypervisor network stack. vCPU and RAM Scaling fortigate vm sizing azure
The license scales dynamically with the size of the Azure VM instance you select. There are no software-enforced vCPU limits, allowing you to scale the VM size up or down via the Azure portal during maintenance windows. 6. Best Practices for Deployment and Scaling
Writing logs directly to the local virtual disk consumes valuable CPU cycles and IOPS. Offload your firewall logs to FortiAnalyzer , FortiCloud , or an Azure Log Analytics workspace via syslog to free up system resources.
Decrypting traffic is resource-intensive. If your traffic is encrypted (HTTPS), you
Azure offers dozens of VM sizes, but FortiGate performance depends heavily on the specific CPU architecture and network performance caps of the underlying hardware. Fortinet supports and optimizes specific Azure VM sizes. Compute-Optimized: F-Series (Fsv2) This public link is valid for 7 days
Fortinet offers two licensing models in Azure: and Pay-As-You-Go (PAYG) via the Azure Marketplace. BYOL License Tiers
High throughput, IPS, and SSL inspection. Often the best price-to-performance ratio for firewalls. Standard_F4s_v2 , Standard_F8s_v2 (General Purpose)
Azure monitors metrics like CPU usage. When thresholds are breached, it automatically provisions a new FortiGate VM and integrates it into the Load Balancer pool.
Azure enforces a strict maximum number of NICs per VM size. A standard high-availability (HA) firewall architecture typically requires at least four interfaces: Management Untrusted (Public/External) Trusted (Private/Internal) HA Sync (Heartbeat) Can’t copy the link right now
5 Gbps+ throughput, massive concurrent sessions, intensive SSL/TLS inspection. Solution: FG-VM16 + Standard_D16s_v5 (or higher).
They provide more memory per vCPU than the F-series, making them incredibly stable against memory-related conserve mode issues.
Severe CPU overhead. The FortiGate must decrypt, inspect, and re-encrypt traffic. If unchecking "Certificate Inspection" and moving to "Deep Inspection," assume a 50-70% reduction in maximum rated throughput. Session Count and Memory
