Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsThere is no universally best FortiGate replacement for a small business. Before switching, compare the security features you need, performance with those features enabled, network capacity, management demands, total recurring cost, and the work and risk involved in migration. Sophos and Firewalla illustrate different options, but neither is a default winner: the right fit depends on your network and who will operate it.
Start with the reason you want to switch
Pin down the problem before comparing products. Is it subscription or support cost, day-to-day administration, missing security features, support requirements, or a planned network redesign? The concern that prompts a change determines which trade-offs matter. Available sources do not establish which concern is most common among small businesses.
Write down what the replacement must preserve and what you want to improve. A firewall that appears simpler or less expensive may still be a poor fit if it lacks a required VPN capability, inspection feature, interface, or management workflow.
Compare the capabilities your business will actually use
Build a feature checklist for your current configuration and operational requirements. Include the firewall rules and security services you rely on, rather than assuming every product’s feature labels or bundles mean the same thing.
Free tools Windows power users keep installed
One-click scans. No signup required.
#1 Best Overall
- Compact and Efficient Design: The FortiGate 40F is designed for small to mid-sized businesses and enterprise branch offices, featuring a compact, fanless desktop form factor that ensures quiet operation and minimizes space usage.
- Robust Connectivity Options: Equipped with 5 GE RJ45 ports, including 1 WAN port and 4 internal ports, this model provides essential connectivity and flexibility for various network configurations in a small-scale environment.
- High-Performance Security: Offers up to 1 Gbps IPS throughput and 600 Mbps threat protection throughput, using Fortinet’s purpose-built security processor technology to deliver industry-leading performance and protection for SSL encrypted traffic.
- Advanced Threat Protection: Integrated with Fortinet’s AI-powered FortiGuard Labs, the FortiGate 40F offers comprehensive cybersecurity, identifying and mitigating both known and unknown threats to maintain robust security across your network.
- Simplified Management and Deployment: Features a user-friendly management console that provides comprehensive network automation and visibility, coupled with Zero Touch Integration with Fortinet’s Security Fabric for easy deployment.
- Threat protection: Identify the intrusion prevention, web filtering, application controls, and reporting you require. Check which functions are included and which require separate licensing.
- Remote access and site connectivity: Record VPN types, users, sites, and dependencies that must continue to work after the change.
- Network separation: Document VLANs, guest networks, and any segmentation or policy requirements.
- Administration: Confirm how policies, alerts, updates, and reporting are handled, and whether remote or multi-site management meets your needs.
Do not treat a product’s general security positioning as proof that it covers your specific requirements. Verify each must-have capability against the vendor’s documentation and the exact model and subscription under consideration.
Compare performance at your security settings and scale
Headline throughput figures are useful only when the measurement reflects comparable features and test conditions. A firewall’s throughput with threat inspection enabled may differ from its basic firewall throughput. Compare figures for the services you intend to run, and verify the vendor’s definitions before treating one number as better than another.
For context, Fortinet’s undated, dynamic small-business product page lists threat-protection throughput figures of 500 Mbps for FortiGate 30G, 1,100 Mbps for 50G, and 1,300 Mbps for 70G. These are Fortinet vendor specifications, not independent comparative test results; they do not establish how those models perform against alternatives. See Fortinet’s small-business firewall product page.
Check the candidate against your real network, not just its maximum advertised rate:
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Rank #2
- BUSINESS READY - pfSense+ software updates included for product lifetime. Netgate TAC Lite technical support included. One year hardware warranty included.
- COMPLETE - Pre-loaded with pfSense+ software to get up and running fast. Simply unbox it and start customizing for your secure edge networking needs. Free help with setup from our expert Technical Assistance Center (TAC) available 24/7/365.
- POWERFUL - A dual core ARM Cortex-A53 1.2 GHz delivers near gigabit routing of common home iPerf3 traffic and in excess of 650 Mbps of firewall throughput.
- COMPACT - Low power draw, a compact form factor, and silent operation allow it to run unnoticed when placed on a desktop, wall, or rack.
- FLEXIBLE - Three (3) 1 GbE switched (WAN/LAN/OPT) ports allow you to configure three separate 1 GbE switched ports for upto a gigabit of bi-directional traffic.
- Your internet connection speed and expected growth.
- The security services that will be enabled at the same time.
- Concurrent users, devices, and sessions.
- Required WAN and LAN interfaces, including any need for multi-gigabit links.
- Capacity for peak periods, remote access, and future sites.
No neutral, like-for-like current benchmark or total-cost comparison across small-business alternatives is established by the available sources. Ask vendors or resellers for figures tied to your intended configuration, and keep the test conditions alongside each number.
Compare management models, not just hardware
The best operational fit depends on who will configure, monitor, update, and troubleshoot the firewall. A streamlined appliance, a centrally managed vendor ecosystem, and a configurable firewall can impose very different day-to-day workloads. Consider whether your staff can manage the system directly, need remote or multi-site controls, or depend on a service provider.
Sophos Firewall
Sophos’s official migration center says it supports migration from FortiGate, SonicWall, and Palo Alto Networks to Sophos Firewall. It also recommends administrator training before migration. That makes Sophos a candidate to evaluate when you want a documented migration route, not evidence that the process is automatic or that Sophos is the best fit. Read the Sophos migration center and account for training and configuration validation.
Firewalla
Firewalla offers physical devices that can operate as a main gateway or bridge an existing router. Its official guide says a mobile phone is required. Gold, Purple, and Purple SE need an additional access point for Wi-Fi, unless an existing router is set to bridge or AP mode. Include those requirements when judging its deployment and management fit; do not assume the appliance itself provides Wi-Fi. Details are in the Firewalla product guide.
Rank #3
- Extensive Connectivity Options: The FortiGate 60F is designed with 10 GE RJ45 ports, including 2 WAN ports, 1 DMZ port, and 7 internal ports, offering broad flexibility and high-density connections for diverse enterprise networking needs.
- Superior Performance for Secure Networks: Features powerful system-on-a-chip acceleration to deliver top-tier security with 1.4 Gbps IPS throughput and 700 Mbps threat protection throughput, ensuring effective defense against advanced threats.
- Enhanced SSL Inspection and SD-WAN Capabilities: Utilizes purpose-built security processor technology to provide the industry's highest SSL inspection performance and robust SD-WAN functionality for secure, high-speed network operations.
- Simple and Effective Management: Comes equipped with a user-friendly management console that supports comprehensive network automation and visibility, alongside Zero Touch Integration with Fortinet's Security Fabric for streamlined deployment.
- Advanced Security Features: Leverages continuous threat intelligence from AI-powered FortiGuard Labs, identifying and mitigating both known and unknown threats, enhancing security across all network traffic, whether encrypted or not.
Other vendor claims
SonicWall publishes a vendor-authored page promoting a switch from Fortinet. Treat its comparisons as sales positioning, not independent proof that a SonicWall product is faster, safer, cheaper, or easier to run. FortiConverter is Fortinet’s service for moving third-party firewall configurations to FortiGate; that service does not demonstrate an automated migration path away from FortiGate.
Calculate the full cost of ownership
Compare costs for the same region, coverage period, and required feature set. A useful estimate includes:
- Firewall hardware and any required access points or switches.
- Security subscriptions and renewal terms.
- Support coverage and any separately priced services.
- Migration, configuration, and administrator training.
- Ongoing staff or provider time for updates, monitoring, and troubleshooting.
Current region-specific totals and comparable support or subscription quotes are not established here. Request quotes for the exact models and term you need; do not assume a named alternative is the lowest-cost choice based on hardware price alone.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Plan the migration as a controlled network change
A firewall replacement can affect more than internet access. Treat it as a project: identify dependencies, validate the new configuration, schedule a cutover, and retain a practical rollback route.
Rank #4
- SonicWall TZ270W Appliance Only - No Service Subscription (02-SSC-2823) - Combines enterprise-grade firewalling with integrated 802.11ac Wave 2 Wi-Fi to deliver secure wired and wireless connectivity in one compact device for small offices and clinics.
- Blocks zero-day threats and ransomware with Capture ATP sandboxing enhanced by RTDMI, plus IPS and anti-malware scanning for layered protection.
- Eliminates the need for separate access points in smaller spaces thanks to built-in high-speed wireless that is simple to deploy and manage.
- Supports VPN, SD-WAN, and TLS 1.3 decryption to secure hybrid cloud access and remote workers while maintaining usability and performance.
- Delivers gigabit performance with up to 750,000 concurrent connections to handle growth in users, devices, and SaaS applications.
- Inventory the existing network: Record interfaces, VLANs, routes, policies, VPNs, remote-access users, and services or devices that depend on them.
- Map requirements to the new platform: Identify how each policy and service will be implemented, including any feature or licensing differences.
- Prepare and review configuration: Build the new setup and have an appropriately trained administrator check it. Sophos specifically recommends training administrators before migration.
- Test representative traffic: Verify business-critical applications, segmentation, internet access, VPNs, and remote access before relying on the new firewall.
- Schedule cutover and rollback: Choose a maintenance window, document the change steps, and preserve a route back to the previous configuration if validation fails.
- Monitor after the change: Check connectivity, security events, and user reports, then address issues before retiring the old setup.
Fortinet’s FortiConverter documentation describes migration of third-party firewall configurations to FortiGate. Its stated direction should not be mistaken for a supported automated export from FortiGate to another vendor. See FortiConverter.
Make a shortlist against your own requirements
There is no evidence-backed universal ranking of FortiGate alternatives for small businesses. A useful shortlist is one that passes your required-feature checks, meets your inspected-throughput and interface needs, fits the skills available to operate it, and has an acceptable quoted total cost and migration plan.
For each candidate, ask the vendor or reseller to confirm the exact model, included and separately licensed functions, performance with your intended inspection services, management and support arrangements, and migration assistance. A public discussion may phrase the question as “What are the best Fortinet alternatives?”—but that wording is not a product ranking or evidence of a winner.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Recommended Free Tools
