Fortinet vs Sophos is a comparison many organisations will consider when reviewing their firewall, network security and wider infrastructure strategy.
Both are established cyber security vendors and both can provide effective firewall protection. The real difference appears when you look beyond the firewall itself.
For organisations dealing with cloud services, hybrid working, multiple locations, Secure SD WAN, Zero Trust and increasingly complex security operations, the wider platform matters. That is where we believe Fortinet increasingly stands apart.
Fortinet vs Sophos: What Is the Real Difference?
Sophos has built a strong position with SMEs, particularly where organisations already use Sophos Central and Sophos endpoint technologies.
Fortinet, however, takes a broader approach. FortiGate sits within a wider security and networking architecture built around FortiOS, with capabilities spanning firewall protection, Secure SD WAN, Zero Trust, identity, networking, cloud and security operations.
The difference is therefore not simply which appliance has the longest feature list. It is how well the firewall can support the wider technology environment around it.
For organisations trying to reduce complexity and bring networking and security closer together, that distinction becomes increasingly important.
1. Performance Matters When Security Is Actually Enabled
Firewall performance figures can look impressive on a specification sheet.
But headline throughput only tells part of the story. Intrusion prevention, application inspection, malware detection, encrypted traffic inspection and other security controls all create additional processing requirements.
Fortinet has designed FortiGate around purpose built ASIC security processors that accelerate networking and security functions.
Sophos XGS appliances also include acceleration technology through their Xstream architecture. Most XGS appliances combine a multi-core x86 processor with a dedicated Xstream Flow Processor for qualifying firewall, IPsec and other processing tasks.
So, the argument should not be that Sophos lacks hardware acceleration. The more useful distinction is architectural. Fortinet has built dedicated security processing deeply into the FortiGate platform and wider FortiOS architecture. For businesses running high traffic environments, multiple locations or extensive security inspection, we believe that approach deserves serious consideration.
The question should not simply be:
How fast is the firewall? It should be: How fast is the firewall when the security controls we actually need are switched on?
2. Secure SD WAN Can Be a Strategic Advantage
For organisations operating multiple sites, firewall and connectivity decisions are increasingly connected. Traditional branch networks may include separate firewalls, WAN connectivity, VPN infrastructure and networking technologies.
That creates complexity.
Fortinet Secure SD WAN combines networking and security within the FortiGate platform. This allows organisations to apply security policy and make connectivity decisions through the same architecture. For businesses reviewing MPLS, branch connectivity or resilience between locations, that can make the firewall project much more strategic.
It creates an opportunity to look at:
- Branch connectivity
- Traffic routing
- Application performance
- Resilience
- Security policy
- Remote access
All as part of the same conversation.
Sophos also offers SD WAN capabilities and continues to develop them, so this is not a case of one platform having SD WAN and the other not. Sophos has specifically expanded its Xstream SD WAN functionality in successive Sophos Firewall releases.
The question is which platform provides the networking depth, scale and architecture your organisation actually requires.
For more complex multi-site environments, Fortinet is often the direction we favour.
3. The Firewall Should Not Operate in Isolation
Many organisations have built their technology environment gradually.
A firewall from one supplier. Networking from another. Remote access somewhere else. Separate endpoint security. Separate identity controls. Another platform for cloud security.
Each technology may work perfectly well independently. The problem is what happens between them. More consoles. More policies. More integrations. More licences. More support arrangements and more opportunities for visibility to become fragmented.
FortiGate forms part of the wider Fortinet Security Fabric, allowing network security to connect more closely with identity, endpoint, cloud and security operations. That does not mean an organisation needs to replace every existing technology with Fortinet. It means the firewall can participate in a broader security architecture rather than operating simply as an isolated appliance.
For internal IT teams trying to manage more with limited resources, that can be a significant advantage.
4. Identity and Access Are Now Part of Network Security
Remote access has changed considerably. The old model was relatively straightforward. A user was outside the network. They connected through a VPN. They were then effectively treated as being inside. Modern environments require more context. Who is the user? What device are they using? Is that device trusted? What application are they trying to access? Should that particular user have access to it?
This is where Zero Trust and stronger identity integration become increasingly important.
Fortinet can bring together technologies including FortiGate, FortiClient and FortiAuthenticator to support identity aware access and Zero Trust Network Access.
For organisations with hybrid users, contractors, multiple offices and cloud applications, access control can no longer be treated as a separate issue from the firewall. It has become part of the wider security architecture.
5. Threat Intelligence Needs to Feed the Platform
A modern firewall cannot rely purely on static configuration. Threats change continuously. New vulnerabilities emerge. Malicious infrastructure changes.Attack techniques develop. Security controls need access to continuously updated intelligence.
FortiGuard Labs provides threat intelligence across Fortinet technologies, with AI and machine learning used across its security services.
For organisations without a large internal cyber security function, the ability for security technologies to benefit from shared intelligence can become increasingly important.
The aim is not simply to identify more threats.
The true objective is to improve how quickly the organisation can recognise suspicious activity, understand its significance and respond appropriately.
6. Security Operations Matter More Than Ever
The firewall sees valuable information. It sees network connections. Applications. Suspicious traffic. Attempts to exploit vulnerabilities. Segmentation activity. All potential indicators of wider malicious behaviour.
That information becomes much more useful when it contributes to wider security monitoring.
At Amicis Group, we do not view the firewall simply as infrastructure. We look at how it fits alongside endpoint, identity, cloud, SIEM, threat intelligence and security operations. The important question is not simply:
Did the firewall block something? It is: Can we understand what is happening across the organisation and respond before suspicious activity becomes a major incident?
That is why integration into wider security operations should now form part of any serious firewall review.
7. What About Sophos XG End of Life?
There is also a practical issue for organisations still running older Sophos XG appliances. Sophos states that the XG Series hardware reached end of life on 31 March 2025, and directs customers towards migration to XGS hardware. For those organisations, a technology decision already needs to be made. The easiest option may be to move directly from XG to the equivalent XGS appliance and that may be the right answer.
We would argue that this is exactly the point at which the wider architecture should be challenged. If you already need to replace the firewall, ask whether your organisation has also changed since the existing platform was selected. Has cloud usage increased? Do you operate more sites? Has hybrid working changed remote access? Are you considering SD WAN? Do you need stronger integration with security monitoring? Has the wider security estate become more complex?
If the answer to several of those questions is yes, moving automatically to the next generation of the same platform could be a missed opportuni
Should You Replace Sophos With Fortinet?
Not automatically. If your Sophos environment is meeting your requirements, performing well and integrating effectively with the wider technology estate, there may be good reasons to keep it.
Sophos XGS is also a current platform, with a dual processor architecture and active Sophos Firewall development but renewal or hardware replacement should always be a point of review.
We would particularly consider Fortinet where:
- Your organisation operates multiple locations
- Secure SD WAN is becoming important
- You need greater networking depth
- You are reviewing WAN or MPLS connectivity
- Remote access and Zero Trust are becoming more important
- Your firewall needs to integrate more closely with wider security operations
- Your environment is becoming increasingly complex
- You want networking and security to operate as part of a more unified architecture
If several of those apply, the question is probably bigger than simply which firewall appliance to buy.
It is an architecture decision.
Why Amicis Often Favours Fortinet
At Amicis Group, we work with Fortinet because we believe its architecture is particularly well suited to organisations that want networking and cyber security to operate more closely together.
The strength is not simply FortiGate. It is what sits around it. Purpose built security processing Secure SD WAN.Zero Trust capabilities. FortiGuard threat intelligence. Identity integration. Centralised management. Integration with wider security operations
For organisations with growing infrastructure, multiple locations or increasing security complexity, those capabilities can create an opportunity to do more than replace an ageing firewall.
They can help simplify the environment and strengthen the wider security architecture.
That is where we believe Fortinet becomes particularly compelling.
Technology renewals are often driven by familiarity. The existing platform works. The team knows how to manage it. The supplier recommends the replacement. The quote arrives. Another term is committed. There may be nothing wrong with that decision but it should still be challenged.
If your Sophos firewall is approaching replacement, or your wider network strategy is changing, ask: If we were designing our network and security architecture today, would we make the same decision? If the answer is yes, retaining Sophos may be entirely appropriate. If the answer is no, use the opportunity to look more widely.
Why not explore our Best Business Firewall for SMEs article.
Do Not Make Your Next Firewall Decision by Default
Considering Fortinet Instead of Sophos?
Amicis Group can review your existing Sophos environment and show you what a Fortinet led approach could look like. That may mean replacement, Secure SD WAN, stronger remote access or better integration with wider security monitoring.
The goal is not change for the sake of it. It is making sure your firewall strategy supports where your organisation is going next.
If your Sophos firewall estate is approaching renewal or replacement, speak to Amicis Group before committing to another term.
✓ Review your current firewall and network environment before renewal.
✓ Compare Fortinet against your existing platform based on security, performance and scalability.
✓ Plan a practical migration path with minimal disruption to your organisation.
