| Model | Fortinet FortiGate 121G Firewall |
| Form Factor | Rack Mount, 1RU |
| Hardware Specifications : | |
| Hardware Accelerated GE RJ45 Ports | 16 Ports |
| Hardware Accelerated GE RJ45 Management / HA Ports | 2 Ports |
| Hardware Accelerated 10 GE SFP+ FortiLink Slots (default) | 4 Ports |
| USB Ports | 1 Ports |
| Console (RJ45) Port | 1 Ports |
| Internal Storage | 1 x 480 GB SSD |
| Trusted Platform Module (TPM) | Yes |
| Bluetooth Low Energy (BLE) | Yes |
| System Performance* — Enterprise Traffic Mix : | |
| IPS Throughput | 5.3 Gbps |
| NGFW Throughput 2, 4 | 3.1 Gbps |
| Threat Protection Throughput 2, 5 | 2.8 Gbps |
| System Performance and Capacity : | |
| Firewall Throughput (1518 / 512 / 64 byte UDP packets) | 39 / 39 / 28 Gbps |
| Firewall Latency (64 byte UDP packets) | 3.17 μs |
| Firewall Throughput (Packets Per Second) | 42 Mpps |
| Concurrent Sessions (TCP) | 3 M |
| New Sessions/Second (TCP) | 140,000 |
| Firewall Policies | 10,000 |
| IPsec VPN Throughput (512 byte) | 35 Gbps |
| Gateway-to-Gateway IPsec VPN Tunnels | 2,000 |
| Client-to-Gateway IPsec VPN Tunnels | 16,000 |
| Concurrent SSL-VPN Users (Recommended Maximum, Tunnel Mode) | 500 |
| SSL Inspection Throughput (IPS, avg. HTTPS) | 3 Gbps |
| SSL Inspection CPS (IPS, avg. HTTPS) | 2,100 |
| SSL Inspection Concurrent Session (IPS, avg. HTTPS) | 315,000 |
| Application Control Throughput (HTTP 64K) | 6.7 Gbps |
| CAPWAP Throughput (HTTP 64K) | 35 Gbps |
| Interface | 1x RJ45 Console Port |
| 2x RJ45 HA and Management Ports | |
| 16x GE RJ45 Ports | |
| 4x 10GE SFP+ FortiLink Slots | |
| 8x SFP Ports | |
| Dimensions : | |
| Height x Width x Length (inches) | 1.73 x 17 x 10 |
| Height x Width x Length (mm) | 44 x 432 x 254 |
| Weight | 12.17 lbs (5.52 kg) |
| Warranty | 1Yr Hardware plus 24x7 Unified Threat Protection (UTP) |