How we make this list: we compare pricing pages, product documentation and public user reviews. Rankite is independent; if a vendor ever pays for a featured spot, that listing is clearly labeled Partner.
Key takeaways
- Fortinet FortiGate is the value leader, with ASIC-accelerated inspection and models for every budget.
- Palo Alto Networks and Check Point top enterprise security effectiveness, at enterprise prices.
- Sophos and WatchGuard are the SMB-friendly picks, with partner-delivered management for lean teams.
- OPNsense and pfSense are free, open-source firewalls with enterprise-grade features if you have the skills.
- Most commercial firewalls are sold by quote or through partners; expect to talk to a reseller, and always get the three-year total with all security services enabled before deciding.
Quick comparison
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We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The best firewall security software
Starting priceSee website
Free planNo
FortiGate is the most frequently recommended firewall in the industry, and for good reason: it packs deep packet inspection, IPS, VPN, and SD-WAN into a single appliance with custom ASICs that keep throughput high when every security feature is turned on. Entry models serve small offices, and the line scales to carrier-grade hardware, with FortiOS consistent across all of them.
For a small or mid-size business, the value proposition is simple: enterprise-grade inspection at a price the mid-market can afford. Centralized management through FortiManager and threat intelligence from FortiGuard Labs round it out. If you only evaluate one firewall, make it this one. Run a trial or lab unit with all threat-prevention features enabled, since raw firewall throughput and fully-inspected throughput are very different numbers.
What we like- ASIC-accelerated deep inspection
- Built-in SD-WAN
- Wide model range from small office to data center
Watch out for- Pricing requires a quote or reseller
- The ecosystem has a learning curve
Starting priceSee website
Free planNo
Palo Alto Networks invented the next-generation firewall category, and its App-ID, User-ID, and Content-ID approach remains the reference design. Its firewalls inspect traffic by application and user rather than port, backed by WildFire cloud threat analysis and the Unit 42 research team.
It is priced for organizations with real security budgets and staff to match. For mid-size companies with compliance obligations or serious threat exposure, the efficacy justifies the cost. Smaller teams may find the platform more than they can usefully operate, and the licensing model rewards those who commit to the wider platform rather than a single gateway.
What we like- Best-in-class application control and threat prevention
- Huge threat intelligence operation
- Hardware, virtual, and cloud form factors
Watch out for- Premium pricing
- Complexity suits teams with security expertise
Starting priceSee website
Free planNo
Sophos Firewall stands out through Synchronized Security: when a Sophos endpoint detects an infection, it tells the firewall, which automatically isolates the machine. That heartbeat between endpoint and network is the kind of automation a two-person IT team needs.
The Xstream architecture offloads TLS inspection and deep packet inspection to dedicated hardware, keeping performance up. For SMBs already on Sophos Intercept X, this is the obvious firewall choice. Even standalone, it is one of the most manageable NGFWs for lean teams.
What we like- Synchronized Security links firewall and endpoint
- Xstream architecture
- Strong SMB reviews
Watch out for- Best value requires Sophos endpoints too
- Pricing by quote
Starting priceSee website
Free planNo
WatchGuard Firebox is the small-business favorite, built around a one-SKU Total Security Suite that bundles every security service so buyers do not have to assemble licenses. The company sells exclusively through partners and MSPs, which is a feature for businesses without IT staff: your provider configures and manages it.
The Firebox line covers single offices to distributed chains, and WatchGuard Cloud gives a clean single-pane view. If you want enterprise-grade protection with SMB pricing and someone else handling the complexity, start with a WatchGuard partner.
What we like- One-SKU Total Security Suite bundling
- Strong MSP channel
- Simple cloud management
Watch out for- Sold through partners, not direct
- Advanced users may want deeper controls
Starting priceSee website
Free planNo
Check Point invented the commercial firewall and remains a top performer in independent prevention tests, with CyberRatings and Miercom benchmarks regularly placing it at the top. The Quantum line spans the Spark series for small businesses up to data-center gateways, all managed through a single console.
Regulated industries value its prevention-first architecture and detailed logging. It is not the cheapest option, but for finance, healthcare, and government-adjacent businesses, the prevention scores make a strong case.
What we like- Industry-leading threat prevention efficacy
- Quantum Spark models for SMB
- Unified management
Watch out for- Premium pricing
- SMB models still need licensing attention
Starting priceSee website
Free planNo
SonicWall's Gen 7 firewalls bring patented Real-Time Deep Memory Inspection, which catches malware in memory that signature engines miss, and the company posts perfect NetSecOPEN threat scores two years running. The TZ series serves branches and small offices at some of the lowest entry prices among credible vendors.
It is a partner-first brand with 17,000 partners and a built-in cyber warranty on qualifying deployments. For budget-constrained SMBs that still want real threat prevention, SonicWall is the pragmatic pick. Talk to one of its 17,000 partners to get bundled pricing that often beats the enterprise vendors by a wide margin.
What we like- Real-Time Deep Memory Inspection catches novel malware
- Competitive SMB pricing
- Included cyber warranty
Watch out for- Interface feels dated
- Enterprise buyers prefer the bigger names
Starting priceFree
Free planYes
OPNsense is the modern open-source firewall: stateful packet filtering, VPN, intrusion detection via Suricata, traffic shaping, and a plugin system, all under a permissive BSD license. It runs on commodity x86 hardware or VMs, and the web interface is cleaner than most commercial consoles.
The community is large and active, with commercial support and a Business Edition available from Deciso. The catch is expertise: there is no vendor holding your hand. For IT-capable teams and homelabs, it delivers firewall capabilities that would cost thousands commercially, for free.
What we like- Free and open source with commercial-grade features
- Modern web UI
- Fast plugin development
Watch out for- No official support without paying Deciso
- You supply the hardware
Starting priceFree
Free planYes
pfSense is the original open-source firewall distribution, running since 2006, and its Community Edition remains free. It offers the full feature set: stateful firewall, NAT, VPN, traffic shaping, captive portal, and packages for Snort, Squid, and more. Netgate sells pfSense Plus on its own appliances for businesses that want supported hardware.
The platform's age is both strength and weakness: enormous community knowledge, but an interface that feels dated next to OPNsense. For a free, proven firewall with the deepest documentation base in the open-source world, pfSense is still the default.
What we like- Longest track record of any open-source firewall
- Huge community and documentation
- PfSense Plus for businesses
Watch out for- Community Edition downloads require registration
- UI shows its age
How we chose
We compared vendor product pages, feature documentation, and independent testing from NetSecOPEN, CyberRatings, and Miercom, alongside practitioner discussion on Reddit and reviews on G2. We required each tool to be currently available with a working website, covering both commercial NGFWs and open-source options. We did not claim hands-on testing.
A practical buying guide for firewalls
Start with your team, not the feature list. A two-person IT shop should shortlist WatchGuard, Sophos, or SonicWall, ideally through a partner who will manage the device. An in-house network engineer can run Fortinet or an open-source firewall and get more for the money. Enterprise security teams with compliance needs belong in Palo Alto or Check Point conversations.
Understand what you are actually buying. A firewall appliance price is only part of the cost: security subscriptions for IPS, web filtering, sandboxing, and support typically add up each year. Ask every vendor for the three-year total with all services enabled, because an unlicensed NGFW is just an expensive router.
For the open-source route, budget your time instead. OPNsense and pfSense are free in dollars but need skilled setup, ongoing patching, and troubleshooting. If your team's hourly cost is real, compare it honestly against a managed commercial option before committing.
Hardware versus software versus cloud firewalls
Firewalls come in three shapes. Hardware appliances, like most FortiGates and Fireboxes, sit at the network edge and are the default for offices. Software firewalls like OPNsense and pfSense install on your own hardware or VMs, trading appliance convenience for flexibility and cost. Cloud-delivered firewalls protect remote users and cloud workloads without on-premise hardware.
Small offices with a single internet connection are well served by a small appliance. Multi-site businesses should look at SD-WAN-capable models from Fortinet or WatchGuard for centralized management. Cloud-first companies with mostly remote staff may get more from a cloud firewall or SASE platform than from an office appliance they rarely use.
Frequently asked questions
What is the best firewall for a small business?
Fortinet FortiGate offers the best overall value, while WatchGuard Firebox is the simplest to buy and run through a partner. Budget-conscious shops should look at SonicWall, and IT-capable teams can run OPNsense or pfSense for free.
Are free firewalls like OPNsense safe for business use?
Yes, if you have the expertise. OPNsense and pfSense are mature, actively maintained, and used by businesses worldwide. The risk is operational: patching, tuning, and troubleshooting are on you, so factor in staff time.
How much does a business firewall cost?
Entry commercial models start around a few hundred dollars for hardware, plus annual security subscriptions that can equal or exceed the hardware price. Open-source firewalls skip the license cost entirely but trade it for your team's setup and maintenance time. Expect to get quotes rather than list prices; the three-year total with all services is the number that matters.
Do I need a firewall if I have antivirus?
Yes. Antivirus protects individual devices; a firewall controls what enters and leaves your network. They are complementary layers, and modern firewalls add intrusion prevention, web filtering, and VPN that endpoint software does not provide.
What is the difference between a firewall and a UTM?
A UTM bundles firewall, antivirus, web filtering, and intrusion prevention in one box. Modern next-generation firewalls do the same thing; the terms have largely converged, with NGFW now the standard label.
Sources we checked (8)
- https://www.fortinet.com
- https://www.paloaltonetworks.com/
- https://sophos.com/
- https://www.watchguard.com/
- https://www.checkpoint.com/
- https://www.sonicwall.com/
- https://opnsense.org/
- https://www.pfsense.org/
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has spent more than a decade helping SaaS and e-commerce brands grow through search. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.
Fortinet FortiGate
Palo Alto Networks
Sophos Firewall
WatchGuard Firebox
Check Point Quantum
SonicWall
OPNsense
pfSense