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Fortinet FortiGate 91G Next-Generation Firewall

Part Number: FG-91G

Technical Details

Desktop firewall, secure SD-WAN, 120GB SSD, 8x GE RJ45, 2x 10GE RJ45/SFP+ shared-media WAN, up to 28 Gbps
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Product & Solutions Expert

Product & Solutions Expert

The FortiGate 91G combines the FortiGate 90G Series performance with integrated 120GB SSD storage for on-device data storage needs. This compact desktop appliance is built on Fortinet's SP5 ASIC and delivers up to 28 / 28 / 27.9 Gbps firewall throughput (1518/512/64 byte UDP) and up to 25 Gbps IPsec VPN throughput (512 byte). Its versatile connectivity options, including two shared-media WAN ports supporting either 10/5/2.5/GE RJ45 or 10GE/GE SFP+/SFP, help meet demanding bandwidth requirements in modern branch environments.

Running on FortiOS, the FortiGate 91G converges networking and security capabilities into a single operating system, supporting secure SD-WAN and next-generation firewall functions in one appliance. With enterprise-grade performance, strong session capacity, and efficient power usage, the FG-91G is well-suited for distributed enterprise sites that require high-throughput security in a small footprint.

High-Speed 10G Connectivity with Integrated Storage

Key Benefits

  • Onboard SSD Storage: Includes 1 x 120 GB SSD for on-device storage.
  • Flexible High-Speed Uplinks: 2x shared-media ports supporting 10/5/2.5/GE RJ45 or 10GE/GE SFP+/SFP.
  • SP5 ASIC Performance: Delivers up to 28 / 28 / 27.9 Gbps firewall throughput (1518/512/64 byte UDP) and IPS throughput of 4.5 Gbps (Enterprise Mix).
  • High IPsec VPN Capacity: Up to 25 Gbps IPsec VPN throughput (512 byte) for secure site connectivity.
  • Low Latency Forwarding: Firewall latency of 3.23 μs (64 byte UDP packets) for latency-sensitive applications.
  • Efficient Desktop Design: Power consumption of 22.4 W average (23.5 W maximum).

Ideal Use Cases

  • Enterprise Branch Security: NGFW protection and policy control for distributed office locations.
  • Secure SD-WAN: Converged SD-WAN and security functions for WAN transformation at scale.
  • High-Throughput Connectivity: Branch environments requiring GE access with optional 10GE uplinks.
  • Encrypted Traffic Security: Deployments leveraging SSL inspection and strong session capacity.

Technical Specifications Summary

  • Firewall Throughput (1518/512/64 byte UDP): 28 / 28 / 27.9 Gbps
  • IPS Throughput (Enterprise Mix): 4.5 Gbps
  • NGFW Throughput (Enterprise Mix): 2.5 Gbps
  • Threat Protection Throughput (Enterprise Mix): 2.2 Gbps
  • IPsec VPN Throughput (512 byte): 25 Gbps
  • SSL-VPN Throughput: 1.4 Gbps
  • SSL Inspection Throughput (IPS, avg. HTTPS): 2.6 Gbps
  • Concurrent Sessions (TCP): 3 M
  • Interfaces: 8x GE RJ45 ports, 2x 10/5/2.5/GE RJ45 or 10GE/GE SFP+/SFP shared media ports
  • Internal Storage: 1 x 120 GB SSD
  • Power / Physical: 12V DC, 3A; 42 x 216 x 178 mm; 1.12 kg

Upgrade Your Network Security

Secure your edge with the high-performance, storage-equipped FortiGate 91G.

Properties

Model / SKU FortiGate 91G / FG-91G
Form Factor Desktop
Internal Storage 1 x 120 GB SSD
Firewall Throughput 28 / 28 / 27.9 Gbps (1518/512/64 byte UDP)
NGFW Throughput 2.5 Gbps
Threat Protection Throughput 2.2 Gbps
Interfaces 8x GE RJ45 ports, 2x 10/5/2.5/GE RJ45 or 10GE/GE SFP+/SFP shared media ports
Power Input 12V DC, 3A (dual redundancy optional)
Dimensions (H x W x L) 42 x 216 x 178 mm (1.65 x 8.5 x 7.0 inches)
Weight 1.12 kg (2.47 lbs)
Operating Temperature 0°C to 40°C (32°F to 104°F)
Certifications FCC, ICES, CE, RCM, VCCI, BSMI, UL/cUL, CB; USGv6/IPv6

Specifications

System Performance - Enterprise Traffic Mix
System Performance and Capacity
Firewall Latency (64 byte UDP) 3.23 μs
Firewall Throughput (Packets Per Second) 41.85 Mpps
Concurrent Sessions (TCP) 3 M
New Sessions/Second (TCP) 124,000
Firewall Policies 5,000
IPsec VPN Throughput (512 byte) 25 Gbps
Gateway-to-Gateway IPsec VPN Tunnels 200
Client-to-Gateway IPsec VPN Tunnels 2,500
SSL-VPN Throughput 1.4 Gbps
Concurrent SSL-VPN Users (Tunnel Mode) 200
SSL Inspection Throughput (IPS, avg. HTTPS) 2.6 Gbps
SSL Inspection CPS (IPS, avg. HTTPS) 1,400
SSL Inspection Concurrent Sessions 300,000
Application Control Throughput (HTTP 64K) 6.7 Gbps
CAPWAP Throughput (HTTP 64K) 23.6 Gbps
Virtual Domains (Default / Maximum) 10 / 10
Maximum Number of FortiSwitches Supported 24
Maximum Number of FortiAPs (Total / Tunnel) 128 / 64
Maximum Number of FortiTokens 500
Hardware & Interfaces
Trusted Platform Module (TPM) Included
Bluetooth Low Energy (BLE) Included
Environment & Power
Power Required Powered by up to 2 External DC Power Adapters (1 adapter included), 100-240V AC, 50/60 Hz
Power Consumption (Average / Maximum) 22.4 W / 23.5 W
Heat Dissipation 80.1 BTU/hr
Storage Temperature -35°C to 70°C (-31°F to 158°F)
Humidity 10% to 90% non-condensing
Noise Level 21.73 dBA
Operating Altitude Up to 10,000 ft (3048 m)

Accessories

Included Accessories External DC Power Adapter (1 adapter included)
Optional Accessories
  • Rack Mount Tray (SP-RACKTRAY-02)
  • Wall Mount Kit (SP-FG60F-MOUNT-20)
  • Mounting Ear Brackets (SP-EAR-FG90G-10)
  • AC Power Adaptor (SP-FG60E-PDC-5)
  • Power Cable (SP-FG60CPCOR-XX) (sold separately)
  • 1 GE SFP RJ45 Transceiver Module (FN-TRAN-GC)
  • 1 GE SFP SX Transceiver Module (FN-TRAN-SX)
  • 1 GE SFP LX Transceiver Module (FN-TRAN-LX)
  • 1 GE SFP Transceiver Module, 90km Range (FR-TRAN-ZX)
  • 10 GE SFP+ RJ45 Transceiver Module (FN-TRAN-SFP+GC)
  • 10 GE SFP+ Transceiver Module, Short Range (FN-TRAN-SFP+SR)
  • 10 GE SFP+ Transceiver Module, Long Range (FN-TRAN-SFP+LR)
  • 10 GE SFP+ Transceiver Module, Extended Range (FN-TRAN-SFP+ER)
  • 10 GE SFP+ Transceiver Module, 30km Long Range BiDi (FN-TRAN-SFP+BD27) (pairs with FN-TRAN-SFP+BD33)
  • 10 GE SFP+ Transceiver Module, 30km Long Range BiDi (FN-TRAN-SFP+BD33) (pairs with FN-TRAN-SFP+BD27)
  • 10 GE SFP+ Passive Direct Attach Cable, 1m (FN-CABLE-SFP+1)
  • 10 GE SFP+ Passive Direct Attach Cable, 3m (FN-CABLE-SFP+3)
  • 10 GE SFP+ Passive Direct Attach Cable, 5m (FN-CABLE-SFP+5)

Shipping

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International buyers must acknowledge that all duties and taxes are their sole responsibility and Network Devices Inc is not held responsible for possible additional charges.

DOMESTIC -

Products are shipped Monday through Friday via UPS/FedEx/USPS. The estimated delivery time is 1-6 business days depending on location. If “Free Shipping” is offered, it will be by Ground only and within USA Continental States Only (48 States). There will be a surcharge on shipments to Hawaii, Alaska, Puerto Rico and APO/FPO addresses. After you have made a purchase, the surcharge will be calculated using the parcel’s weight and size. Network Devices Inc ships the product the same day of receiving an order. Otherwise you will a receive notification of delay or cancellation of said order.
 
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