Firewall & Network Security
Secure, dependable connectivity designed around your people, applications and risk, not just a box plugged into the router.
What this service covers
A firewall only protects you if it is sized, configured and maintained properly. We design the network segments, rules and remote-access paths around how your business actually works.
We also review existing firewalls: stale rules, open ports, outdated firmware and shared admin accounts are common and fixable.
What's included
- Firewall installation, configuration and policy review
- VLANs, subnetting, routing and network segmentation
- Site-to-site and remote-access VPN setup
- Multi-ISP failover and load balancing
- Web filtering, threat protection and access policies
- Guest network isolation
- Configuration backups, firmware updates and documentation
Exact scope, product models, licensing, timelines and warranty are confirmed during requirement assessment. Third-party subscriptions and spare parts are quoted separately where applicable.
Where clients ask for this.
Remote work
Secure VPN with proper authentication instead of exposed remote-desktop ports.
Two or more branches
Site-to-site VPN with sensible routing and failover.
Flat, messy network
Segment servers, staff, guests and devices such as CCTV and printers.
Options we work with and compare.
Examples of widely used products, listed for orientation only. IT SupportSphere is vendor-neutral: being named here does not imply any partnership or endorsement. We recommend based on your needs, budget, licensing and local support availability.
Commercial next-gen firewalls
Fortinet FortiGate, Palo Alto Networks, Sophos XGS, SonicWall, WatchGuard, Cisco Secure Firewall / Meraki MX
Open-source / flexible
pfSense, OPNsense, MikroTik RouterOS
What to compare
Threat-protection throughput (not just firewall throughput), VPN throughput, concurrent sessions, subscription cost, local support
Choosing and configuring a business firewall
UTM versus NGFW, how to read throughput numbers, rule design, VPN, and a hardening checklist you can use today.
Deliverables you can rely on
- Documented rules and network diagram
- Backed-up configuration
- Admin handover with named accounts
- Recommendations for ongoing review
From planning to handover
Assess
We review the site, requirements, constraints and what you already have.
Plan
We agree design, equipment, scope, schedule and dependencies in writing.
Implement
We install, configure, secure and integrate the agreed solution.
Validate & hand over
We test, document key details and walk you through the result.
Questions about Firewall & Network Security
Is my ISP router not enough?
Consumer or ISP routers usually lack the policy control, logging, VPN features and update management a business needs. A business firewall gives you much better visibility and control.
Will a firewall slow down our internet?
Properly sized hardware will not. We size throughput for your link speed and the security features you enable, with headroom.
Can you review our existing firewall?
Yes. A review covers rules, firmware, remote-access exposure, admin accounts and backups, with a prioritised list of fixes.
Connected expertise, one team.
Many projects combine more than one area of IT infrastructure.
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Preventive maintenance, remote and on-site support, health checks, updates and clear escalation under an annual contract.
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