FortiGate 4200F
800 Gbps firewall throughput with 450 million Hyperscale sessions
- Threat protection
- 45 Gbps
- Firewall throughput
- 800 Gbps
- IPsec VPN
- 210 Gbps
- Concurrent sessions
- 210 Million
Front panel
- QSFP cage
- SFP cage
- RJ45 copper
The 4200F opens the 4000 series with 800 Gbps of firewall throughput, 210 Gbps IPsec and, with Hyperscale, 450 million concurrent sessions at 7 million new sessions per second. Eight 100GE QSFP28 and eighteen 25GE SFP28 ports in 3 RU.
A forwarding and session-scale platform. Its 45 Gbps threat protection is the same as the far smaller 3200F, so this is not the box to buy for inspection depth — it is the box to buy when you need to move very large volumes of traffic and hold very large session tables.
Highlights
- 800 Gbps firewall throughput, 210 Gbps IPsec VPN
- Hyperscale: 450M sessions, 7M new sessions/sec
- 8x 100GE QSFP28, 18x 25GE SFP28
- 400,000 firewall policies, DC variant
Typical deployments
- Carrier aggregation and CGNAT deployments
- High-volume forwarding with selective inspection
- Service provider edge with very large session requirements
The numbers, with their conditions
Every figure below is Fortinet's own, with the test conditions it was measured under.
Performance
Fortinet's published figures. Firewall throughput is measured on UDP with no inspection enabled — size your deployment on threat protection throughput instead, which is measured with firewall, IPS, application control and malware protection all running against an enterprise traffic mix.
| Firewall throughput (1518 / 512 / 64 byte UDP) | 800 / 788 / 400 Gbps |
|---|---|
| IPsec VPN throughput (512 byte)IPsec VPN performance test uses AES256-SHA256. | 210 Gbps |
| IPS throughput (enterprise mix)IPS, application control, NGFW and threat protection are measured with logging enabled. | 52 Gbps |
| NGFW throughput (enterprise mix)NGFW performance is measured with firewall, IPS and application control enabled, enterprise mix traffic. | 47 Gbps |
| Threat protection throughput (enterprise mix)Threat protection performance is measured with firewall, IPS, application control and malware protection enabled, enterprise mix traffic. | 45 Gbps |
| SSL inspection throughput (IPS, avg. HTTPS)SSL inspection performance values use an average of HTTPS sessions of different cipher suites. | 50 Gbps |
| Application control throughput (HTTP 64K) | 135 Gbps |
| Firewall latency | 3.02 µs |
Capacity
| Concurrent sessions | 210 Million / 450 Million |
|---|---|
| New sessions / second | 1 Million / 7 Million |
| Firewall policies | 400,000 |
| Max gateway-to-gateway IPsec tunnels | 40,000 |
| Max client-to-gateway IPsec tunnels | 200,000 |
| SSL VPN throughput | 16 Gbps |
| Concurrent SSL VPN users (recommended max, tunnel mode) | 30,000 |
| Virtual domains (default / max) | 10 / 500 |
Security Fabric capacity
How much of the rest of the Fabric this model manages directly, with no separate controller.
| Max managed FortiAPs (total / tunnel) | 8,192 / 4,096 |
|---|---|
| Max managed FortiSwitches | 300 |
| Max FortiTokens | 20,000 |
Hardware
| Interfaces | 8x 100GE QSFP28/40GE QSFP+, 18x 25GE SFP28, 2x GE RJ45 |
|---|---|
| Local storage | 2x 1.92 TB (4201F) |
| Power supplies | Dual PS |
| Form factor | 3 RU |
| Variants | DC |
Model-specific caveats
Fortinet conditions that apply to this model in particular. Worth reading before you order.
| Note 1 | The second figure requires a Hyperscale license. |
|---|
Sources
- Fortinet Product Matrix — FortiGate Network Security Platform (July 2026) — retrieved 2026-09-01
Reproduced from Fortinet published documentation and subject to change without notice. Where a figure is load-bearing for your design, ask us to confirm it in writing before you order — we will.
Buyers also compare
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FortiGate 4800F
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FortiGate 3800G
200 Gbps threat protection — the highest inspected throughput outside a chassis