Managed Firewalls
Enterprise-grade firewall management with 24/7 monitoring, unified threat management, and expert change control so your network stays protected while you focus on your business.
Challenges we solve
Managing firewalls in-house demands specialist skills, constant vigilance, and a level of resource most teams can't sustain.
Complex rule management
Your firewall policies have grown organically over the years. Hundreds of rules, many undocumented, some conflicting — and nobody's quite sure which ones are still needed. One wrong change could open a gap or bring down a service.
Evolving threat landscape
New vulnerabilities emerge daily. Keeping intrusion prevention signatures, web filtering rules, and antivirus definitions current requires dedicated attention your team may not have the bandwidth for.
24/7 monitoring burden
Threats don't wait for office hours. Maintaining round-the-clock monitoring means staffing shifts, on-call rotas, and the operational overhead that comes with genuine always-on coverage.
High availability complexity
Your business can't afford downtime, but architecting, testing, and maintaining failover configurations across multiple sites is a specialist discipline in its own right.
What are Managed Firewalls?
Claranet's Managed Firewalls service gives you enterprise-grade perimeter security without the operational burden. We take full responsibility for your firewall infrastructure, from initial design and deployment through to day-to-day management, monitoring, and change control.
At the core of the service are firewall rules that control the flow of traffic between your network zones, combined with Unified Threat Management (UTM) features including IPS, web filtering, and anti-virus are available as part of the service, with the full UTM bundle recommended for enhanced protection. Availability may vary depending on the selected cloud firewall tier. All threat intelligence is powered by FortiGuard Labs, delivering continuously updated protection against the latest threats.
Whether you need cloud-hosted firewalls in a Claranet data centre or Microsoft Azure, physical appliances on your premises, or a combination of both, we design and manage the right solution for your environment. Every deployment follows a structured Consult, Design, Build, and Manage methodology to ensure it meets your exact requirements from day one.
Key Benefits
- 24/7/365 firewall monitoring and incident response
- Unified Threat Management features including IPS, web filtering, and anti-virus are available on supported cloud firewall tiers, with the full UTM bundle recommended for comprehensive protection.
- Cloud, physical, and hybrid firewall deployment options
- Local and distributed high availability for resilience
- Co-managed threat defence with expert change management
- FortiGuard Labs threat intelligence, continuously updated
Why Claranet?
Decades of network security expertise, backed by real numbers.
Deployment options
Choose the firewall deployment model that fits your infrastructure — cloud, physical, or both.
Cloud Firewall
Claranet Data Centre
A virtualised firewall hosted within Claranet's own data centres, ideal for organisations with cloud-first or co-located infrastructure. No physical hardware to manage on your end.
- Rapid deployment
- Scales with your cloud environment
- Fully managed by Claranet engineers
Cloud Firewall
Microsoft Azure
A cloud-native firewall deployed within your Azure environment, protecting workloads in the public cloud with the same rigorous management as on-premises.
- Native Azure integration
- Consistent policy management across environments
- Same SLAs and monitoring as DC-hosted firewalls
Physical Firewall
Customer Premises (CPE)
A dedicated hardware appliance installed at your site, giving you on-premises perimeter protection managed remotely by Claranet's security operations team.
- Hardware deployed to your location
- Ideal for offices and branch sites
High Availability
Local & Distributed HA
For organisations that can't afford downtime. Local HA provides active/passive failover with transparent session synchronisation. Distributed HA spans two geographically separated data centres for maximum resilience.
- Local HA: instant failover, session continuity
- Distributed HA: 30-second failover across DCs
Technical capabilities
What's under the hood of your managed firewall service.
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Intrusion Prevention System
Real-time threat detection and blocking powered by FortiGuard Labs intelligence. Signatures are continuously updated to protect against known exploits, zero-day variants, and emerging attack vectors.
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Unified Threat Management
A single platform features including IPS, web filtering, and anti-virus are available on supported cloud firewall tiers, with the full UTM bundle recommended for enhanced protection. Reduces complexity and cost compared to running separate point solutions, while maintaining comprehensive coverage across all traffic types.
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SSL inspection
Certificate-based inspection on Essentials, or full deep SSL inspection on Advanced. Gives visibility into encrypted traffic that would otherwise bypass your security controls entirely.
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Co-managed Threat Defence
Claranet manages the firewall infrastructure and responds to threats around the clock. You retain visibility and input through Claranet Online, with escalation paths and regular service reviews built in.
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Site-to-site VPN
Secure encrypted tunnels between your sites, data centres, and cloud environments. From 5 tunnels on Essentials up to 20 on Advanced, scaling with your connectivity requirements.
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Change management
All firewall changes are processed through a structured change management process. Five rule changes per month included, with standard changes fulfilled within 48 hours and urgent changes within 24 hours.
How we deliver
A structured four-phase approach ensures your firewall is designed, deployed, and managed to the highest standard.
We start by understanding your network architecture, security requirements, and business objectives. A consultative engineering review identifies the right deployment model, HA configuration, and package tier for your environment.
Accreditations & partnerships
Certified expertise you can trust.
Ready to take the burden off your team?
Whether you need a single cloud firewall or a fully resilient multi-site deployment, our network security specialists will design the right solution for your environment.
Or call us on 0330 390 0507