To get the best throughput with FortiGate on KVM:
The specific build FGTVM64-KVM-v7.2.3-build1262 represents a mature iteration of Fortinet's virtual firewall offering within the "long-term support" 7.2 branch. It bridges the gap between hardware-specific FortiGates and pure software-defined networking. This review evaluates the deployment, performance, and operational stability of this specific release on KVM hypervisors (such as Proxmox VE, Red Hat Virtualization, or Ubuntu KVM). fgtvm64kvmv723fbuild1262fortinetoutkvmqcow2
Verdict: A highly capable and stable release for mid-scale virtual network security, provided the underlying hardware resources are adequately provisioned. To get the best throughput with FortiGate on KVM:
| Feature | Status / Note |
|--------|----------------|
| Licensing | Requires a valid FortiGate VM license (hourly, annual, or perpetual). Unlicensed → limited to 1 CPU core, low throughput. |
| KVM Version | Tested on RHEL/CentOS 7/8/9, Ubuntu 18.04+, Debian 10+. Use virt-manager or virsh. |
| RAM | Minimum 2 GB, recommended 4–8 GB+ for full features. |
| Disk Space | qcow2 grows from ~2 GB to many GB with logs/traffic. |
| NIC Model | Use virtio (not e1000 or rtl8139). | The specific build FGTVM64-KVM-v7
qemu-system-x86_64 -hda /path/to/image.qcow2 -m 2048 -enable-kvm -net nic -net user
qemu-img info fgtvm64kvmv723fbuild1262fortinetoutkvmqcow2
Expected output:
file format: qcow2
virtual size: 10 GiB (example)
| Pros | Cons |
| :--- | :--- |
| Stability: This specific build is robust and free of the major memory leaks found in earlier 7.2 versions. | Software Limitations: Lacks hardware ASIC acceleration, limiting UTM throughput compared to entry-level hardware appliances. |
| Integration: Native qcow2 support makes deployment on Proxmox/RHV seamless. | Licensing Cost: Requires a paid license to retain config after a reboot (unlike competitors like OPNsense which are free). |
| UI/UX: The v7.x interface is significantly more user-friendly than previous generations. | Resource Intensive: Requires aggressive CPU/RAM reservation to avoid performance throttling. |
Assuming you have the file fgtvm64kvmv723fbuild1262fortinetoutkvmqcow2, here’s a basic deployment on Ubuntu 22.04 KVM:
# Install KVM and tools
sudo apt update && sudo apt install qemu-kvm libvirt-daemon-system virt-manager -y