FortiGate 91G Firewall

FortiGate 91G is a next-generation firewall (NGFW) and Secure SD-WAN appliance that provides high performance, strong security throughput, and advanced networking capabilities for medium to enterprise branch environments. It is designed for organisations requiring deep threat protection and robust encrypted traffic handling without compromising network performance. 

Get Quote
Fortinet FortiGate 91G

Overview:

FortiGate 91G combines firewalling, intrusion prevention, Secure SD-WAN, VPN, and application control into a single integrated platform. Powered by Fortinet’s FortiOS operating system and SP5 security processors, it enables efficient inspection of encrypted traffic while maintaining high throughput for critical business applications. 

With strong firewall and VPN capacities, FortiGate 91G supports distributed enterprise networks that demand reliable connectivity and scalable security. Its Secure SD-WAN features optimise multiple WAN connections for cloud and SaaS application performance while enforcing consistent security policies across all traffic.

Why Choose FortiGate 91G?

Enterprise-Grade Threat Protection

Intrusion Prevention System (IPS)
Antivirus and malware inspection
Web/DNS filtering and application control

Integrated Secure SD-WAN

Application-aware traffic steering
SLA-based path selection
Optimised cloud application delivery

High Performance Architecture

Strong firewall and VPN throughput
Efficient encrypted traffic inspection
Scales for distributed enterprise deployments

Common Use Cases

Branch Security & Connectivity

Consistent enforcement of security policies across distributed locations.

Secure SD-WAN Edge

Optimises multi-link WAN performance while protecting the network.

VPN & Remote Access

High throughput for IPsec and SSL VPN connections.

Cloud & SaaS Networks

Secure and reliable access to cloud services and applications.

Retail & Multi-Site Operations

Centralised security and reporting across multiple branches.

Technical Specifications – FortiGate 91G

Performance

Firewall ThroughputUp to 28 Gbps
IPS ThroughputUp to 4.5 Gbps
NGFW ThroughputUp to 2.5 Gbps
Threat ProtectionUp to 2.2 Gbps
SSL InspectionUp to 2.6 Gbps

VPN Capacity

IPsec VPN ThroughputUp to 25 Gbps
Site-to-Site VPN Tunnels200
Client-to-Gateway VPN Tunnels2,500
SSL-VPN ThroughputUp to 1.4 Gbps
Concurrent SSL-VPN Users200

Interfaces & Ports

GE RJ45 Internal Ports8
10GE RJ45/SFP+ Shared Ports2
USB Port1
Console PortRJ45
Onboard Storage120 GB SSD

System Performance

Concurrent Sessions~1,500,000
New Sessions / sec~124,000
Firewall Policies5,000
Firewall Latency (64 byte UDP)~3.23 μs

System Limits

Virtual Domains (VDOMs)Up to 10
Max FortiSwitches Supported24
Max FortiAPs (Total / Tunnel)96 / 48
Max FortiTokens500

Management & Services

Secure SD-WANYes
Centralized ManagementFortiManager
Logging & AnalyticsFortiAnalyzer
Security ServicesFortiGuard AI

FortiGate 91G is built to maintain high throughput even when applying deep threat inspection and encrypted traffic processing for business critical workloads

Variants & Deployment Options

FortiGate 91G Standard

High-performance NGFW and Secure SD-WAN appliance suitable for enterprise branch deployments.

Security and Cloud Bundles

Available with FortiGuard Unified Threat Protection, Enterprise Protection, FortiCare support, and FortiGate Cloud subscriptions for centralised analytics and management.

Subscription & Licensing

FortiGate 91G uses subscription-based FortiGuard services to enable advanced threat protections. Basic firewalling works without subscriptions, but higher-level protections require active licensing.

  • UTP – Unified Threat Protection
  • Enterprise Protection – Advanced security suite
  • FortiCare Support – Firmware updates and 24×7 technical support
  • Subscription terms: 1-year, 3-year, or 5-year
Request FortiGate 90G Quote from SYSIT

Get the right FortiGate 91G Package

Tell Us your users, WAN Speed and VPN needs. we’ll recommend the right bundle

Request Pricing