Firewalls for Branch, Campus and Cloud

The Role of Enterprise Firewalls in Modern IT Environments

Enterprise firewalls inspect and control traffic between trusted and untrusted zones, protecting users, applications, sites, data centres, cloud environments, and remote workers across the network edge and internal estate.

The platform you choose determines how consistently you can enforce policy, segment internal traffic, secure branch and remote access, and whether adding threat prevention, TLS inspection, or SD-WAN integration simplifies operations or adds complexity.

As a partner to vendors including Fortinet, Cisco, and Juniper, we specify firewalls against your requirements, so you're not paying for throughput, licensing, or high availability you won't use or left short on performance, inspection depth, and policy control where you need them.

Meeting the Demands of Modern Networks

Modern firewalls are built to handle the demands placed on today's threat landscape, from advanced threats and hybrid working to zero trust and cloud protection.

Protecting Against Modern Cyber Threats

FortiManager, Cisco Firewall Management Center, and Juniper Security Director help centralise policy while threat intelligence blocks known and emerging attacks.

Securing Hybrid Workforces

FortiSASE, Cisco security integrations, and Juniper security policy tools help protect users as they move between offices, home, and cloud apps.

Supporting Zero Trust Security

Identity-aware rules, ZTNA, and policy orchestration help enforce least-privilege access instead of trusting users because they are on the network.

Simplifying Security Operations

FortiAnalyzer, FortiAIOps, and Cisco Security Cloud Control help turn logs, alerts, and policy changes into more manageable operational workflows.

Protecting Cloud Environments

Cloud firewall management and unified policy controls help secure workloads and connections that no longer sit inside one corporate perimeter.

Strengthening Business Resilience

Central policy, logging, and recovery plans help security teams respond faster when outages, misconfigurations, or active attacks affect connectivity.

Typical Enterprise Environments

Firewalls adapt to different environments, each with distinct traffic flows, control requirements, and operational security priorities.


Branch Offices

Secure internet breakout, VPN, SD-WAN, and guest access with consistent policy and simple remote management across distributed sites.

Enterprise Networks

Enforce policy between users, applications, cloud services, and internal segments with identity awareness, threat prevention, and reporting.

Data Centres

Protect server zones, databases, and application tiers with high-throughput inspection, east-west visibility, redundancy, and controlled change management.

Retail

Protect stores, POS, guest Wi-Fi, and payment systems with PCI-aligned policy, remote oversight, and repeatable templates.

Healthcare

Segment clinical systems, admin networks, guest access, and medical devices while supporting patient data protection and auditability.

Manufacturing

Separate OT, IT, supplier connections, and remote maintenance paths with controlled access that reduces cyber risk.

Key Considerations When Deploying Firewalls

Getting these areas right will help your business avoid costly rework and gaps in coverage, performance, security or lifecycle support.


01

Network Edge Design

Plan firewall placement alongside Edge Routers so internet breakout, WAN routing and failover paths are clear before deployment.

02

Security Policy Management

Decide how Security Management will control rules, objects, change approval and reporting across sites and environments.

03

Zero Trust & Secure Access

Confirm Zero Trust & Secure Access requirements for users, applications and administrators before finalising policy design.

04

Threat Detection & Response

Check how SIEM & XDR Platforms will receive logs, alerts and threat events so investigations are not dependent on firewall views alone.

05

SASE Integration

Assess where SASE services should complement branch firewalls, remote access and cloud security rather than duplicating controls.

06

Lifecycle & Vendor Support

Factor Vendor Support & Lifecycle Services into licensing, security updates, hardware support and roadmap fit before committing.

Technology Comparison: Branch vs Enterprise vs Data Centre Firewalls

Each firewall type protects a different part of the network. Knowing the difference helps you apply the right security control without overcomplicating sites that need simpler protection.

Branch Firewalls Enterprise Firewalls Data Centre Firewalls
Where they sit At branch offices, retail sites, clinics, depots or remote locations connecting users and local services securely At central sites or major network boundaries where broader user, application and internet traffic is controlled Inside or at the edge of data centres protecting application, server and storage environments
Traffic profile Local internet breakout, VPN, cloud application access and secure connectivity for distributed teams High user counts, multiple network zones, remote access, internet edge traffic and business application flows Server-to-server traffic, application segmentation, high throughput and controlled access to critical systems
Performance priority Reliable security and connectivity in compact sites, often with limited on-site support Throughput, inspection, policy scale and resilience across many users, applications and security services Low-latency inspection and segmentation without slowing critical workloads or east-west traffic
Security focus Consistent policy, secure remote management, VPN, web filtering and protection for local users and devices Central policy enforcement, threat prevention, identity-aware access, compliance reporting and operational visibility Application segmentation, controlled administrator access, workload protection and audit-friendly rule management
What it is not built for Replacing high-throughput enterprise or data centre firewall roles Very small branch use cases where simpler remote-site security is enough General branch connectivity or end-user wireless access control
Explore Branch Firewalls Explore Enterprise Firewalls Explore Data Centre Firewalls

Enterprise Platforms We Recommend

Fortinet, Cisco, and Juniper platforms each suit different security architectures, teams, and workloads. Here's where each one fits best.


Juniper SRX product

Juniper SRX

Best for: Teams standardised on Junos that want firewall policy and routing operations handled within one consistent operating model across the wider estate.

Strengths
  • Junos consistency spans SRX, MX, and EX for simpler operations
  • Security Director Cloud unifies on-prem and cloud policy management
  • ATP Cloud adds sandboxing and continuously updated threat intelligence
  • Scales cleanly from branch SRX300 to data-centre SRX5000
Cisco Secure Firewall product

Cisco Secure Firewall

Best for: Cisco-led estates that want firewalling tied closely to identity, DNS-layer protection, and cloud-delivered security controls without adding separate platforms.

Strengths
  • Secure Firewall combines Snort 3 IPS with Talos threat intelligence
  • Integrates with ISE, Umbrella, and Duo for coordinated policy
  • Cloud-delivered or on-prem management supports large-scale operations
  • Secure Network Analytics adds behavioural visibility beyond signature-based controls
Fortinet FortiGate product

Fortinet FortiGate

Best for: Teams that want converged security and networking with strong price-performance from branch to data centre, especially where throughput under inspection matters.

Strengths
  • Custom SPUs sustain throughput with deep inspection enabled
  • Security Fabric links firewalls, switches, access points, and endpoints
  • FortiManager and FortiAnalyzer centralise policy and security analytics
  • Clear migration path to SASE through FortiSASE services
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Get a clear recommendation for your IT infrastructure

Unsure which platform is the right fit? Our specialists can assess crucial factors such as workloads, compatibility, operational priorities and future growth to recommend the most suitable approach.

Why Work With Steel City Consulting

We’re trusted by IT teams in enterprise environments, data centres and distributed networks. Our role is to help you make the right infrastructure decisions, with practical support across Fortinet, Cisco and Juniper firewalls.

  • Official multi-vendor partner Pricing, licensing and upgrade routes across leading infrastructure vendors.
  • Decades of IT expertise Hands-on consultancy across networking, compute, storage and security.
  • UK-wide support network Certified engineers and technicians for on-site projects, SLAs and break/fix cover.

Firewall Services

Support across the full firewall lifecycle

From architecture and deployment to optimisation and modernisation, we help you build resilient security infrastructure that protects changing traffic and applications.

Firewalls Procurement & Vendor Support

We help you compare suitable firewall platforms across Fortinet, Cisco and Juniper — balancing performance, licensing, security services, lifecycle status and total cost.

Right-sized firewall selection

Match throughput, interfaces, security services and performance to your requirements.

Licensing & support guidance

Get the right licensing and support for your environment.

Partner pricing & availability

Access competitive pricing and improved lead times.

Trade-in & refresh options

Maximise value from existing equipment and refresh with ease.

Need help with firewalls?

Speak to our experts about design, deployment, optimisation or modernisation of your security infrastructure.

Speak to a specialist today

Related Solutions

Firewalls provide a critical control layer across branch, enterprise, and data centre network architecture.
The solution below connects firewall strategy with stronger segmentation, secure access, Zero Trust, and threat visibility.

Explore More Enterprise Platforms

Browse the full range available from each manufacturer we partner with.

Fortinet Networking

Integrated switching, wireless, SD-WAN and firewall management within a unified security-driven networking fabric.

View Fortinet Networking

Cisco Networking

Switching, wireless, routing and security platforms designed for resilient operations and stronger policy control.

View Cisco Networking

Juniper Networking

Junos-based infrastructure with Mist AI for automated operations and faster resolution of user-impacting issues.

View Juniper Networking

Explore Related Technology

If you're specifying firewalls, these categories cover the routing, SD-WAN, cloud-managed and industrial networking areas that shape the wider security perimeter.

Industrial Networking

Ruggedised network hardware for operational sites, factory floors, utilities, and harsh environments requiring reliable segmented connectivity.

Browse models

Cloud-Managed Networking

Centrally managed switching and wireless with visibility and control across every site from a single console.

Browse models

SD-WAN

Policy-based WAN connectivity for steering traffic across broadband, MPLS, and cloud links while improving branch resilience.

Browse models

Enterprise Routers

Routing platforms for branch, WAN, cloud, and site-to-site connectivity with secure traffic control and resilient links.

Browse models

firewalls FAQ

How do I choose the right firewall platform for our security requirements?

Choose a firewall platform by matching threat inspection needs, throughput, segmentation design, compliance requirements, VPN usage, and management capability at scale.

Also consider architecture fit, as perimeter firewalls, internal segmentation firewalls, and cloud or virtual firewalls for cloud workloads often have different sizing and feature priorities. Use the vendor comparison above to narrow the right platform for your security model, traffic profile, and management requirements.

How do next-generation firewall vendors compare on threat protection and performance?

Next-generation firewall vendors differ in threat intelligence, inspection performance, SD-WAN integration, management tooling, segmentation features, and security ecosystem depth at scale.

Meaningful differences usually appear under full inspection load, not basic stateful filtering, so compare throughput and latency with IPS, anti-malware, and SSL inspection enabled, alongside threat intelligence quality and integration. Use the platform comparison above to compare the main options against management model, security requirements, and site profile.

What impact does firewall choice have on network segmentation and compliance posture?

Firewall choice affects segmentation design, inspection policy, logging quality, remote access, compliance evidence, and how consistently security controls are enforced.

Firewall placement and policy define trust boundaries across user, server, OT, and guest networks, which directly affects containment if an account or device is compromised. Many compliance frameworks also require auditable segmentation and logged policy enforcement, making firewall capability a direct control rather than only perimeter protection.

How do I know if our firewalls need replacing or upgrading?

Replace firewalls when inspection throughput, licensing, support status, VPN capacity, logging, or security feature coverage no longer meets risk requirements.

Replacement is usually needed when the platform cannot sustain full threat prevention at required traffic levels, is nearing end of support, or lacks capability for SSL inspection, sandboxing, SD-WAN, or cloud security integration. This helps avoid security gaps, expired support, and unnecessary policy complexity.

Can you support mixed-vendor firewall environments during a migration?

Yes, mixed-vendor firewall environments can be supported during migration when policies, NAT rules, VPNs, routing, and logging dependencies are mapped.

During transition, security policy intent should be documented independently of vendor syntax, then implemented consistently across both platforms until cutover is complete, with testing and fallback at each stage. For firewall migration, policy review, or multi-vendor security estates, speak to our network security experts before finalising the approach.

What throughput, inspection, and redundancy specifications should firewalls meet for our traffic volume?

Specify firewalls around inspected throughput, concurrent sessions, VPN capacity, SSL inspection, high availability, logging volume, and future traffic growth at scale.

Base sizing on performance with full security inspection enabled rather than headline maximum throughput, as vendor figures can materially overstate production capacity. Confirm SSL or TLS inspection capability and its performance impact as well, because encrypted traffic creates a major blind spot if inspection cannot be sustained properly.

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From initial design and deployment to infrastructure reviews, optimisation and refreshes, our specialists can help you identify what needs to change and plan the right way forward.
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