Your IT team spends hours patching firewalls, troubleshooting VPN complaints and managing rules across multiple locations. Meanwhile, employees work from home, applications run in the cloud and the attack surface grows faster than your team’s capacity.
Traditional firewalls were designed for a world where everything lived inside the office walls. That world no longer exists. Employees log in from home networks and public wifi. Applications run on AWS, Azure or SaaS platforms. The classic perimeter has disappeared.
Firewall as a Service moves your security layer to the cloud. Instead of routing traffic back to a physical appliance, inspection happens at the nearest cloud point. Less latency, less management, consistent protection for everyone regardless of location.
What is Firewall as a Service
FWaaS is a cloud-based security service that provides the same protection as a traditional firewall, but as a subscription. No hardware in your server room. No firmware updates over the weekend. The provider manages the infrastructure, you manage the policy.
The service inspects traffic for threats, filters unwanted websites, prevents data exfiltration and applies access policies. This happens for all traffic, whether it comes from the office, a remote worker or a branch location.
The difference with a virtual firewall matters. A virtual firewall is simply software running on a VM. You remain responsible for patches, scalability and availability. True FWaaS is cloud-native: multi-tenant, elastically scalable and fully managed.
Why traditional firewalls fall short
Physical firewalls have fixed limits. If your organisation scales, you need to buy new hardware. Enable all security features at once, like SSL decryption and intrusion prevention, and throughput often drops by 50 to 80 percent. IT teams are forced to disable features to maintain speed.
Then there’s the maintenance. Firmware updates, vulnerability patches, End-of-Life cycles. Your security team spends more time on appliance management than threat analysis.
The real problem is architectural. With hybrid work, traffic from remote users must first be routed back through a VPN tunnel to the central firewall. Then it goes back out to the internet to reach the cloud application. This causes latency, clogs bandwidth and frustrates users who just want to work.
More than 95 percent of web traffic is now encrypted. Mid-market appliances struggle to decrypt this traffic at scale without performance loss. Without decryption, your firewall is effectively blind to the content of modern attacks.
How FWaaS works
The process is straightforward. Devices or routers establish a secure tunnel to the FWaaS cloud, often via a lightweight software agent or an IPsec connection. Traffic is routed to the nearest Point of Presence.
At the PoP, inspection takes place. SSL/TLS traffic is decrypted. The system scans for malware, command-and-control callbacks and indicators of data exfiltration. Filtering rules are applied based on URL categories and application controls. Clean traffic continues to its destination.
Because inspection happens on cloud clusters with massive computing power, enabling all security features doesn’t cause performance loss. Users don’t notice the security layer.
Updates are rolled out centrally. When a new vulnerability is discovered, the provider protects all customers at once. No manual patches, no downtime, no delay.
Business benefits
From capital expenditure to operational costs
Traditional firewalls require large upfront investments. Hardware is depreciated over three to five years. If your bandwidth grows faster than expected, you need to replace it early.
FWaaS works on a predictable subscription basis, often per user or per bandwidth. Costs rise and fall with your organisation. Shrink, and costs drop. Grow through an acquisition, and you roll out security immediately without waiting for hardware.
Less management overhead
The shortage of security professionals remains acute. FWaaS transfers the heavy lifting to the provider: patching, racking, stacking. Your team can focus on work that matters, like threat hunting and policy optimisation.
New locations are secured within minutes by deploying a pre-configured agent. No waiting weeks for hardware and an engineer on site. Policy changes roll out globally within seconds.
Compliance and reporting
NIS2 requires organisations to implement appropriate security measures. GDPR demands limited and proportionate access to personal data. FWaaS provides centralised logging and reporting for audits. Remote workers and external contractors fall under the same security controls as office employees.
FWaaS within SASE
FWaaS doesn’t stand alone. It’s a component of Secure Access Service Edge, an architecture that combines networking and security into a single cloud service.
Zero Trust Network Access provides per-application access instead of broad network access. SD-WAN optimises connectivity between locations. Secure Web Gateway protects against web-based threats. FWaaS brings all these elements together with consistent policy enforcement.
The combination ends the tangle of point solutions. One console, one set of rules, complete visibility.
Zero Trust as foundation
Traditional firewalls operate on implicit trust. If you’re inside the network, you’re trusted. This enables lateral movement. Once an attacker breaches the perimeter, they can move freely to infect other systems.
Zero Trust reverses this. Never trust, always verify. Access is granted based on identity, device status and context. A user gets access to a specific application, not the entire network. A compromised laptop cannot infect the rest of the environment.
FWaaS acts as the enforcement point for this model. It verifies every connection before granting access.
Isolation as additional protection
Most security solutions rely on detection. They scan for known bad signatures. If a threat is new, it’s often missed until an update is released.
Jimber takes a different approach: isolation. With Browser Isolation, active web content runs in a disposable container in the cloud, not on the user’s device. The user receives a visual stream of the website and can click and scroll normally. But no malicious code ever reaches the corporate laptop.
Does a user click a phishing link? The malware infects the container, not the endpoint. When the session ends, the container is destroyed along with the threat.
Network Isolation works on the same principle. Devices and users are isolated from each other. Even if a printer or IoT device is compromised, it cannot attack the file server.
Devices without agent
Printers, cameras, IoT sensors and industrial machines cannot run a security agent. In traditional setups, they form a blind spot.
NIAC hardware provides inline isolation for these devices. They’re placed in a separate segment with strict rules about which traffic is allowed. Only defined communication flows are permitted.
This closes a common attack vector. Unmanaged devices no longer become a gateway to the rest of the network.
Implementation
Assessment
Map where traffic comes from and where it goes. Identify users, devices and applications. Determine which pain points matter most. Is VPN latency the biggest problem? Or lack of visibility with remote workers?
Pilot
Start with a specific department or branch location. Test user experience and evaluate management. Is the dashboard intuitive? Can rules be applied easily?
Phased rollout
Introduce FWaaS first for mobile users. This immediately solves VPN complaints. Then translate your existing firewall rules to flexible, identity-based policy. Phase out physical appliances as they reach end of life.
Frequently asked questions
Is the cloud secure?
Reputable FWaaS providers invest more in infrastructure security than individual organisations can afford. The provider secures the cloud, you secure the access.
What happens to latency?
The extra hop to the cloud is usually offset by distributed Points of Presence. For remote users, connecting to a nearby PoP is faster than routing traffic back to a central data centre.
How predictable are costs?
Choose per-user pricing models rather than variable bandwidth pricing. This prevents surprises during traffic peaks.
How does FWaaS help with NIS2 compliance?
FWaaS provides centralised logging, consistent policy enforcement and detailed reporting. This supports requirements for access control, monitoring and incident response.
What about devices that cannot run an agent?
NIAC hardware isolates printers, IoT sensors and industrial equipment. Only defined communication flows are allowed.
Security that works
The way we work has changed. Security must change with it. FWaaS consolidates your security stack into one cloud-managed platform. Less complexity, lower costs, better protection.
Jimber combines FWaaS, ZTNA, Secure Web Gateway and SD-WAN in one platform. Book a demo and discover how your security becomes simpler.
