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FortiGate 51G

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FortiGate 51G Series

Fortinet FortiGate 51G

Converged Next-Generation Firewall and SD-WAN

The FortiGate 51G delivers converged NGFW and SD-WAN with 64 GB onboard SSD, 2.25 Gbps IPS throughput, hardware-accelerated SD-WAN ASIC SP5, and integrated FortiGuard AI-Powered Security Services.
1.5 Gbps
Threat Protection
1.3 Gbps
SSL Inspection
700,000
Concurrent Sessions


Overview

Converged Next-Generation Firewall (NGFW) and SD-WAN
The FortiGate 51G integrates firewalling, SD-WAN, and security in one appliance with 64 GB onboard SSD storage, making it ideal for distributed enterprise branch sites requiring extended local logging and WAN architecture transformation.

The 51G series runs on FortiOS, the industry’s first converged networking and security operating system. This single OS approach enables businesses to gain benefits of operational efficiency and unified protection from the seamless integration of Fortinet Solutions within a Hybrid Mesh Firewall architecture.

As a cornerstone of the Fortinet Security Fabric platform, the FortiGate NGFW works seamlessly with FortiGuard AI-Powered Security Services to deliver coordinated, automated, end-to-end threat protection in real time.

The 51G is built on the patented SD-WAN-based ASIC SP5, which delivers unmatched performance over traditional CPUs with lower cost and reduced power consumption. This application-specific design and embedded multi-core processor further accelerate the convergence of networking and security functions to optimize secure connections and deliver a robust user experience at branch locations.

IPSNGFWThreat ProtectionInterfaces
2.25 Gbps1.25 Gbps1.1 GbpsMultiple GE RJ45 | Variants with 5G, PoE, DSL, SFP, WiFi, and/or storage

Highlights:

  • Gartner® Magic Quadrant™ Leaders for both Network Firewalls and SD‑WAN
  • Unparalleled performance enabled by Fortinet’s patented ASIC and the FortiOS operating system
  • Enterprise-grade protection with FortiGuard AI-Powered Security Services
  • Simplified operations with centralized management for networking and security, automated workflows, deep analytics, and self-healing
  • Inclusive SD-WAN and wireless controller in every FortiGate appliance at no extra cost
  • Rich portfolio for any business budget and need

Features

FortiGuard AI-Powered Security Services

FortiGuard AI-Powered Security Services is part of Fortinet’s layered defense and tightly integrated into our FortiGate NGFWs and other products. Infused with the latest threat intelligence from FortiGuard Labs, these services protect organizations against modern attack vectors and threats, including zero-day and sophisticated AI-powered attacks.

  • Network and file security
  • Web/DNS security
  • SaaS and data security
  • Zero-Day threat prevention
  • OT security

FortiOS Everywhere

FortiOS, Fortinet’s Real-Time Network Security Operating System

FortiOS is the operating system that powers Fortinet Security Fabric platform, enabling enforcement of security policies and holistic visibility across the entire attack surface. FortiOS provides a unified framework for managing and securing networks, cloud-based, hybrid, or a convergence of IT, OT, and IoT. FortiOS enables seamless and efficient interoperation across Fortinet products with consistent and consolidated AI-powered protection across today’s hybrid environments.

Unlike traditional point solutions, Fortinet adopts a holistic approach to cybersecurity, aiming to reduce complexities, eliminate security silos, and improve operational efficiencies. By consolidating security functions into a single platform, FortiOS simplifies management, reduces costs, and enhances overall security posture. Together, FortiGate and FortiOS create intelligent, adaptive protection to help organizations reduce complexity, eliminate security silos, and optimize user experience.

By integrating generative AI (GenAI), FortiOS further enhances the ability to analyze network traffic and threat intelligence, detects deviations or anomalies more effectively, and provides more precise remediation recommendations, ensuring minimum performance impact without compromising security.

Available in:


Fortinet ASICs: Unrivaled Security, Unprecedented Performance

Powered by the only purpose-built SPU

Traditional firewalls cannot protect against today’s content and connection-based threats because they rely on off-the-shelf general-purpose central processing units (CPUs), leaving a dangerous security gap. Fortinet’s custom SPUs deliver the power you need to radically increase speed, scale, and efficiency while greatly improving user experience and reducing footprint and power requirements. Fortinet’s SPUs deliver up to 520 Gbps of protected throughput to detect emerging threats and block malicious content while ensuring your network security solution does not become a performance bottleneck.

Fortinet ASICs are designed to be energy-efficient, leading to lower power consumption and improved TCO. They deliver industry-leading throughput, handle more traffic and perform security inspections faster, reduce latency for quicker packet processing and minimize network delays.

Fortinet SPUs are designed with integrated security functions like zero trust, SSL, IPS, and VXLAN to name but a few, dramatically improving the performance of these functions that competitors traditionally implement in software.

Secure SD-WAN ASIC SP5

  • Combines a RISC-based CPU with Fortinet’s proprietary SPU content and network processors for unmatched performance
  • Delivers the industry’s fastest application identification and steering for efficient business operations
  • Accelerates IPsec VPN performance for the best user experience on direct internet access
  • Enables best-of-breed NGFW security and deep SSL inspection with high performance
  • Extends security to the access layer to enable SD-Branch transformation with accelerated
Unified Management for Optimal Security and Efficiency

Whether you are a small business or a large enterprise, Fortinet provides centralized control, visibility, and automation for your security infrastructure.

  • FortiManager: Centralized management at scale for distributed enterprises
  • FortiGate Cloud: Simplified management for small and mid-size businesses
FortiConverter Service

Migration to FortiGate NGFW made easy

The FortiConverter Service provides hassle-free migration to help organizations transition quickly and easily from a wide range of legacy firewalls to FortiGate NGFWs. The service eliminates errors and redundancy by employing best practices with advanced methodologies and automated processes. Organizations can accelerate their network protection with the latest FortiOS technology.

Use Cases

Perimeter Protection
  • Protect networks from malicious traffic, guard against file-based threats, block web-based attacks, and secure applications and data with natively integrated FortiGuard AI-Powered Security Services
  • Inspect and control incoming and outgoing traffic based on defined security policies
  • Perform real-time SSL inspection (including TLS 1.3) with full visibility into users, devices, and applications across the attack surface
  • Accelerate performance, protection, and energy efficiency with Fortinet’s patented SPU with converged security and networking technologies

Secure SD-WAN
  • FortiGate enables best-of-breed WAN edge with integrated SD-WAN, WAN optimization, security, and unified management from a single FortiOS operating system
  • FortiGate, built on a patented SD-WAN-based ASIC, delivers faster application identification to avoid delays in accessing applications and accelerates overlay performance regardless of location
  • Enhances hybrid working with a comprehensive SASE solution by integrating cloud-delivered SD-WAN with security service edge (SSE)
  • Achieves operational efficiencies at any scale through automation, deep analytics, and selfhealing

Secure Branch
  • The Fortinet Security Fabric platform enables FortiGate NGFWs to automatically discover and secure IoT devices for faster branch onboarding
  • Fully integrated with FortiSwitch secure Ethernet switches and FortiAP access points, FortiGate easily extends security to WAN, LAN, and WLAN at branch offices for unified protection and reliable connectivity
  • FortiGate and Fortinet products work seamlessly with FortiManager to centralize visibility and simplify management across locations for IT teams
  • FortiGate HA support ensures continuous network protection and minimizes downtime in the event of hardware failures or network disruptions

Hardware

FortiGate 50G/51G

Interfaces

  1. 1 x USB Port
  2. 1 x Console Port
  3. 1 x GE RJ45 WAN Port
  4. 1 x GE RJ45 FortiLink Port
  5. 3 x GE RJ45 Ethernet Ports
Superior wireless coverage

A built-in dual-band, dual-stream access point is integrated on the FortiWiFi 50G series, providing the industry high-speed WiFi-6 (802.11ax) wireless access (1201 Mbps @ 5 GHz, 574 Mbps @ 2.4 GHz).

Trusted Platform Module (TPM)

The FortiGate 50G features a dedicated module that hardens physical networking appliances by generating, storing, and authenticating cryptographic keys. Hardware-based security mechanisms protect against malicious software and phishing attacks.

Access Layer Security

FortiLink protocol enables you to converge security and network access by integrating the FortiSwitch into the FortiGate as a logical extension of the firewall. FortiLink-enabled ports can be reconfigured as regular ports as needed.

Compact and Reliable Form Factor

Designed for small environments, the FortiGate can be on a desktop or wall-mounted. It is small, lightweight, yet highly reliable with superior meantime between failures, minimizing the chance of network disruption.

Signed Firmware Hardware Switch

The signed firmware switch is a physical security switch. It is by default set to the highest security level. The highest security level ensures that only an appropriately validated FortiOS firmware can be loaded on the FortiGate. This feature adds an additional physical layer of security to the FortiGate, acting as a key deterrent to and reducing risk of compromise.

Specifications

Technical Specifications

Hardware Specifications 11
FG-50G/51G FWF-50G/-51G
Hardware Accelerated GE WAN Port 1 1
Hardware Accelerated GE RJ45 Ports 3 3
Hardware Accelerated GE RJ45 FortiLink Port (Default) 1 1
USB Ports 1 1
Console Port (RJ45) 1 1
Trusted Platform Module (TPM)
Bluetooth Low Energy (BLE)
Signed Firmware Hardware Switch
Antenna Ports (SMA) 3
SIM Slots (Nano SIM) 2
Wireless Interface Dual Radio (2.4 GHz/ 5 GHz), 802.11 a/b/g/n/ac/ax
System Performance — Enterprise Traffic Mix 3
FG-50G/51G FWF-50G/-51G
IPS Throughput 2.25 Gbps 2.25 Gbps
NGFW Throughput 1.25 Gbps 1.25 Gbps
Threat Protection Throughput 1.1 Gbps 1.1 Gbps
System Performance 21
FG-50G/51G FWF-50G/-51G
Firewall Throughput (1518/512/64 byte UDP packets) 5 / 5 / 4 Gbps 5 / 5 / 4 Gbps
Firewall Latency (64 byte UDP packets) 2.42 μs 2.42 μs
Firewall Throughput (Packets Per Second) 6 Mpps 6 Mpps
Concurrent Sessions (TCP) 720 000 720 000
New Sessions/Second (TCP) 85 000 85 000
Firewall Policies 2000 2000
IPsec VPN Throughput (512 byte) 4.5 Gbps 4.5 Gbps
Gateway-to-Gateway IPsec VPN Tunnels 200 200
Client-to-Gateway IPsec VPN Tunnels 250 250
SSL-VPN Throughput
Concurrent SSL-VPN Users (Recommended Maximum, Tunnel Mode)
SSL Inspection Throughput (IPS, avg. HTTPS) 1.3 Gbps 1.3 Gbps
SSL Inspection CPS (IPS, avg. HTTPS) 699 699
SSL Inspection Concurrent Session (IPS, avg. HTTPS) 74,000 74,000
Application Control Throughput (HTTP 64K) 2.8 Gbps 2.8 Gbps
CAPWAP Throughput (HTTP 64K) 3.8 Gbps 3.8 Gbps
Virtual Domains (Default / Maximum) 5/5 5/5
Maximum Number of FortiSwitches Supported 8 8
Maximum Number of FortiAPs (Total / Tunnel Mode) 16 / 8 16 / 8
Maximum Number of FortiTokens 500 500
High Availability Configurations Active-Active, Active-Passive, Clustering Active-Active, Active-Passive, Clustering
Dimensions 4
FG-50G/51G FWF-50G/-51G
Height x Width x Length (inches) 1.6 x 8.5 x 6.3 1.7 x 8.5 x 7.0
Height x Width x Length (mm) 40.5 x 216 x 160 42 x 216 x 178
Weight 2.2 lbs (1.0 kg) 2.4 lbs (1.1 kg)
Form Factor (supports EIA/non-EIA standards) Desktop Desktop
Operating Environment and Certifications 12
FG-50G/51G FWF-50G/-51G
Power Rating 12VDC, 3A 12VDC, 3A
Power Required Powered by External DC Power Adapter, 100–240V AC, 50/60 Hz
Maximum Current 100V/0.4A, 240V/0.2A TBA
Power Consumption (Average / Maximum) 8.3 W / 8.9 W TBA
Heat Dissipation 30.35 BTU/h TBA
Operating Temperature 32°F to 104°F (0°C to 40°C)
Storage Temperature -31°F to 158°F (-35°C to 70°C)
Humidity 10% to 90% non-condensing
Noise Level Fanless 0 dBA
Operating Altitude Up to 10 000 ft (3048 m)
Compliance FCC, ISED, CE, UL/cUL, CB
Certifications USGv6/IPv6
Radio Specifications 3
FG-50G/51G FWF-50G/-51G
Multiple User (MU) MIMO 2 x 2
Maximum Wi-Fi Speeds 1201 Mbps @ 5 GHz 574 Mbps @ 2.4 GHz
Maximum Tx Power 21.0 dBm per chain @ 2.4GHz 19.5 dBm per chain @ 5GHz

Products

Fortinet Products

FortiGate 51G Base Appliance
FortiGate-51G 5 x GE RJ45 ports (including 4 x Internal Ports, 1 x WAN Ports), 64 GB SSD onboard storage #FG-51G
Fortigate-51G Hardware plus FortiCare Premium and FortiGuard Unified Threat Protection (UTP)
FortiGate-51G Hardware plus 1 Year FortiCare Premium and FortiGuard Unified Threat Protection (UTP) #FG-51G-BDL-950-12
FortiGate-51G Hardware plus 3 Year FortiCare Premium and FortiGuard Unified Threat Protection (UTP) #FG-51G-BDL-950-36
FortiGate-51G Hardware plus 5 Year FortiCare Premium and FortiGuard Unified Threat Protection (UTP) #FG-51G-BDL-950-60
FortiGate-51G Advanced Threat Protection (IPS, Advanced Malware Protection Service, Application Control, and FortiCare Premium)
FortiGate-51G 1 Year Advanced Threat Protection (IPS, Advanced Malware Protection Service, Application Control, and FortiCare Premium) #FC-10-GT51G-928-02-12
FortiGate-51G 3 Year Advanced Threat Protection (IPS, Advanced Malware Protection Service, Application Control, and FortiCare Premium) #FC-10-GT51G-928-02-36
FortiGate-51G 5 Year Advanced Threat Protection (IPS, Advanced Malware Protection Service, Application Control, and FortiCare Premium) #FC-10-GT51G-928-02-60
FortiGate-51G Unified Threat Protection (UTP) (IPS, Advanced Malware Protection, Application Control, URL, DNS & Video Filtering, Antispam Service, and FortiCare Premium)
FortiGate-51G 1 Year Unified Threat Protection (UTP) (IPS, Advanced Malware Protection, Application Control, URL, DNS & Video Filtering, Antispam Service, and FortiCare Premium) #FC-10-GT51G-950-02-12
FortiGate-51G 3 Year Unified Threat Protection (UTP) (IPS, Advanced Malware Protection, Application Control, URL, DNS & Video Filtering, Antispam Service, and FortiCare Premium) #FC-10-GT51G-950-02-36
FortiGate-51G 5 Year Unified Threat Protection (UTP) (IPS, Advanced Malware Protection, Application Control, URL, DNS & Video Filtering, Antispam Service, and FortiCare Premium) #FC-10-GT51G-950-02-60

Pricing Notes:

  • Hardware plus FortiCare Premium and FortiGuard Enterprise Protection Hardware Unit, FortiCare Premium Ticket Handling, Advanced Hardware Replacement (NBD), Firmware and General Upgrades, Enterprise Services Bundle (IPS, AI-based Inline Malware Prevention, Advanced Malware Protection, Inline CASB Database, Data Loss Prevention, Application Control, URL, DNS & Video Filtering, Antispam, Attack Surface Security, and FortiConverter Service) plus term of contract
  • Hardware plus FortiCare Premium and FortiGuard Unified Threat Protection (UTP) Hardware Unit, FortiCare Premium Ticket Handling, Advanced Hardware Replacement (NBD), Firmware and General Upgrades, UTP Services Bundle (IPS, AV, Botnet IP/Domain, Mobile Malware, FortiGate Cloud Sandbox including Virus Outbreak and Content Disarm & Reconstruct, Application Control, URL, DNS & Video Filtering and Antispam Service) plus term of contract
  • Enterprise Protection (IPS, AI-based Inline Malware Prevention, Inline CASB Database, DLP, App Control, Adv Malware Protection, URL/DNS/Video Filtering, Anti-spam, Attack Surface Security, Converter Svc, FortiCare Premium) FortiCare Premium Ticket Handling, Advanced Hardware Replacement (NBD), Firmware and General Upgrades, Enterprise Services Bundle (IPS, AI-based Inline Malware Prevention, Advanced Malware Protection, Inline CASB Database, Data Loss Prevention, Application Control, URL, DNS & Video Filtering, Antispam, Attack Surface Security, and FortiConverter Service)
  • Unified Threat Protection (UTP) (IPS, Advanced Malware Protection, Application Control, URL, DNS & Video Filtering, Antispam Service, and FortiCare Premium) FortiCare Premium Ticket Handling, Advanced Hardware Replacement (NBD), Firmware and General Upgrades, UTP Services Bundle (IPS, AV, Botnet IP/Domain, Mobile Malware, FortiGate Cloud Sandbox including Virus Outbreak and Content Disarm & Reconstruct, Application Control, URL, DNS & Video Filtering and Antispam Service)
  • Advanced Threat Protection (IPS, Advanced Malware Protection Service, Application Control, and FortiCare Premium) FortiCare Premium Ticket Handling, Advanced Hardware Replacement (NBD), Firmware and General Upgrades, Advanced Threat Protection Bundle (IPS, AV, Botnet IP/Domain, Mobile Malware, FortiGate Cloud Sandbox including Virus Outbreak and Content Disarm & Reconstruct Service, Application Control)
  • FortiCare Essential Support FortiCare Essential Ticket Handling, Hardware Replacement, Firmware and General Upgrades, Application Control
  • FortiCare Premium Support FortiCare Premium Ticket Handling, Advanced Hardware Replacement (NBD), Firmware and General Upgrades, Application Control
  • FortiCare Elite Support FortiCare Premium Support with FortiCare Elite Ticket Handling.
  • Prices are for one year of Premium RMA support. Usual discounts can be applied.
  • Annual contracts only. No multi-year SKUs are available for these services.
  • Contact Fortinet Renewals team for upgrade quotations for existing FortiCare contracts.
  • Pricing and product availability subject to change without notice.

FAQ

Common Questions

Can't find what you're looking for? Reach out and our team will be happy to help.

The FortiGate 51G includes 64 GB of onboard SSD storage for extended local logging and reporting, while the 50G has no internal storage. Both models share identical firewall performance, interface counts, and security feature sets.

Both models share identical firewall performance and security feature sets. The FortiWiFi 51G adds an integrated dual-band 802.11ax (WiFi-6) wireless access point, 3 SMA antenna ports, and 2 nano SIM slots, making it suitable for branch offices needing combined wired and wireless connectivity.

For most deployments, the UTP (Unified Threat Protection) bundle is the recommended starting point u00e2u20acu201d it includes IPS, antivirus, web filtering, application control, antispam, and FortiCare Premium support.

Description

The FortiGate 51G delivers converged next-generation firewall and SD-WAN capabilities with 64 GB onboard SSD storage and 2.25 Gbps IPS throughput, powered by the dedicated SD-WAN ASIC SP5 and FortiGuard AI-Powered Security Services.

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