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Firewalls

As we are seeing, cybercrime and data breach rates are increasing daily in our digital landscape. For this purpose, top-tier firewalls and network security devices are becoming more important than ever. People whose work mostly relies on IT mechanisms must configure effectual safety measures to protect their sensitive data and critical systems. They play an important role in the defense of every IT infrastructure and they act as a barrier between internal networks and external threats while monitoring and controlling incoming and outgoing traffic based on defined safety rules.

ASA5506

ASA5506 - Cisco 5506-X 4Gb 60 Hz Network Security Firewall Appliance

£113.58 Incl. VAT: £136.30
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FG-100D

FG-100D - Fortinet FortiGate 100D 22-Ports 1000Base-T + 2-Ports SFP 1U Desktop Network Security Firewall

£355.77 Incl. VAT: £426.92
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SA4500

SA4500 - Juniper SSL VPN Appliance

£129.33 Incl. VAT: £155.20
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SRX5308

SRX5308 - NetGear ProSafe 230V Quad Port 10/100/1000Base-T Gigabit Ethernet SSL VPN Firewall Router

£180.03 Incl. VAT: £216.04
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ISA-3000-4C-K9

ISA-3000-4C-K9 - Cisco 4 x 1000Base-T RJ45 Ports 1U Rack-Mountable Network Security Firewall Appliance

£958.36 Incl. VAT: £1,150.03
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SRX345

SRX345 - Juniper 8-Ports 1Gb RJ-45 + 8 x Ports SFP + 4 x Ports Mini-PIM Slots 1U Rack-mountable Managed Services Gateway Security Appliance

£1,831.40 Incl. VAT: £2,197.68
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ASA5525-X

ASA5525-X - Cisco ASA 5500 Series 5525-X 8-Ports 10/100/1000Base-T 1U Rack-mountable Managed Gigabit Ethernet Network Security/Firewall Appliance

£176.08 Incl. VAT: £211.30
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ASA5505-BUN-K9

ASA5505-BUN-K9 - Cisco ASA 5505 8-Ports Firewall Edition Bundle Security Appliance

£129.98 Incl. VAT: £155.98
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SRX320

SRX320 - Juniper 6-Ports PoE+ Gigabit Ethernet Security Appliance Firewall

£55.11 Incl. VAT: £66.13
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SRX340

SRX340 - Juniper SRX Series 8-Ports 1000Base-T + 8-Ports SFP Services Gateway

£325.42 Incl. VAT: £390.50
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MX67-HW

MX67-HW - Cisco Meraki MX67 450 Mb/s Security Firewall Appliance

£182.36 Incl. VAT: £218.83
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02-SSC-6447

02-SSC-6447 - SonicWall TZ270 Security Firewall Appliance
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Buy Firewall Appliances for Next-Generation UK Network Security

When you buy firewall appliances from BulkDevices UK, you secure a critical defence against 2026’s escalating cyber threats. Organisations in the UK are facing ransomware attacks, supply chain attacks and AI-driven phishing attacks like never before. A specific hardware firewall provides dedicated silicon designed to monitor, filter and prevent bad traffic from entering your network in the first place. When UK businesses are seeking NCSC Cyber Essentials certification, this physical control is a must. We offer all the firewall appliances UK which allow you to install a real network security firewall without sacrificing performance, and still maintain compliance with current security regulations.

Traditional Firewalls vs Next Generation Firewalls UK

Legacy firewalls provide simple port/protocol filtering. They are unable to recognize application-layer content, making UK networks susceptible to new types of attack that are able to sneak through whitelisted ports. Next-generation firewalls UK, in comparison, perform Deep Packet Inspection (DPI), which identifies and blocks certain applications, such as Slack or BitTorrent, no matter the port number. As modern network security appliances, these solutions provide deeper visibility and control over network traffic than traditional firewalls. The Cyber Essentials Plus requirements by 2026 need to be met in addition to the traditional stateful inspection. With the deployment of NGFW firewall appliances, you can enjoy intrusion prevention, application awareness and SSL decryption. This technology gap is what makes it possible for organisations in the UK to instantly lower their breach risk surface when they move from basic routers to purpose-built NGFW.

Selecting Business and Enterprise Firewall Solutions

Real-world protection efficacy is determined by matching firewall throughput (Gbps) to the number of concurrent UK users and the amount of encrypted traffic.

UK SME Protection A compact business firewall hardware that offers NGFW inspection, SSL decryption and web filtering in one desktop appliance, suitable for small businesses (UK under 250 users) that wish to comply with the NCSC Cyber Essentials requirements.
Enterprise Perimeter Multi-gigabit throughput, TLS 1.3 inspection for enterprise firewall solutions running high performance on large corporate networks with thousands of concurrent user sessions in UK.
Data Centre and Cloud Edge Consistent policies across physical and virtual infrastructure, including virtualization-ready commercial firewall systems (VM-Series/vSRX) protecting UK colocation environments and hybrid cloud workloads.

To avoid bottlenecks, the right business firewall hardware is chosen. Redundant power and high availability clustering are provided by enterprise firewall solutions for larger deployments. A commercial firewall solution is a compromise between cost and capability for mid-sized organizations. Every hardware firewall device that we sell comes with verified firmware and active threat intelligence subscription options.

Enterprise Cybersecurity Firewalls and Zero-Trust Architecture

By 2026, enterprise cybersecurity firewalls will be part of the enforcement points in a zero-trust network architecture, where no device or user is trusted by default, no matter where it is located. Enterprise-grade network firewalls UK are seamlessly integrated with identity providers like Azure AD and Okta. Access is based on user identity, device health posture and real-time risk scoring, not on old IP address policies. This identity-based model conforms to the NCSC's zero-trust approach, where no compromised workstation can move laterally through your UK network. Next-generation firewalls continuously make use of the principle of least privilege—even traffic from “safe” IP ranges previously believed safe is blocked. To build a secure and scalable infrastructure, organisations often combine advanced firewalls with other networking devices that enhance visibility, connectivity, and policy enforcement across the entire network.

Top Brands: Fortinet, Palo Alto, Cisco, Sophos, and Check Point

Fortinet Firewalls Fortinet firewalls (FortiGate) dominate as the UK performance leader, delivering the highest SSL inspection throughput per pound spent. You will find them widely deployed across British retail chains, manufacturing sites, and local government networks where budget efficiency meets security rigour.

Fortinet Firewalls
Fortinet firewalls (FortiGate) dominate as the UK performance leader, delivering the highest SSL inspection throughput per pound spent. You will find them widely deployed across British retail chains, manufacturing sites, and local government networks where budget efficiency meets security rigour.
Palo Alto Firewalls
Palo Alto firewalls (PA Series) represent the zero-trust pioneer, preferred by UK financial services firms and critical national infrastructure operators requiring the deepest application-layer visibility and threat prevention.
Cisco Firewalls
Cisco firewalls (Secure Firewall/Firepower) serve as the enterprise integration standard for UK organisations already standardised on Cisco switching, routing, and wireless infrastructure, offering seamless policy orchestration.
Sophos Firewalls
Sophos firewalls gain traction through Synchronized Security innovation, popular with UK managed service providers who need endpoint-to-firewall telemetry sharing.
CheckPoint Firewalls
CheckPoint firewalls maintain dominance in UK enterprise and telecommunications environments, delivering unified management for thousands of concurrent security gateways.

Frequently Asked Questions (FAQs)

Is a hardware firewall required for UK Cyber Essentials certification?
Yes. Cyber Essentials mandates a boundary firewall as one of five core controls. The firewall must block unauthenticated inbound connections by default. Hardware appliances are the most straightforward method for UK businesses to demonstrate this control during NCSC assessment.

What throughput firewall do I need for my UK office?
Calculate your peak internet bandwidth and multiply by three to account for SSL inspection overhead. A UK office with 500Mbps internet and heavy encrypted traffic needs a firewall with at least 1.5Gbps of SSL inspection throughput to avoid creating a performance bottleneck.

What is the difference between a firewall and a UTM appliance?
A firewall primarily controls network access based on rules and application inspection. A UTM (Unified Threat Management) appliance adds antivirus, email filtering, web proxy, and IPS into the same hardware, providing broader protection for UK SMEs without managing multiple separate security products.

How do I choose between Fortinet and Palo Alto firewalls for my UK business?
Fortinet offers superior price-to-performance for UK mid-market businesses prioritising throughput and value. Palo Alto is the choice for UK enterprises requiring the most granular application control and advanced zero-trust capabilities, though at a significantly higher licensing cost.

Why Buy Firewall Appliances from BulkDevices UK?

We maintain UK-based stock of new and certified refurbished enterprise firewall appliances, enabling fast nationwide delivery for urgent security deployments. Every unit ships with active threat intelligence subscription licence options, competitive pricing for UK IT resellers and MSPs, expert pre-sales advice on Cyber Essentials compliance, and post-sales firmware support. BulkDevices UK is your trusted supplier for public sector and corporate security hardware procurement.