Network security
services

Network security is the combination of technology, processes and controls used to protect an organisation’s users, devices, applications, systems and data as they communicate across local networks, the internet, cloud platforms and remote connections.

A network security service may include firewall deployment and management, network segmentation, secure remote access, web filtering, intrusion prevention, Wi-Fi security, cloud connectivity, monitoring and ongoing policy optimisation. The exact scope should be based on the organisation’s architecture, risks, users and compliance requirements.

A Next-Generation Firewall, commonly known as an NGFW, provides capabilities beyond traditional port and protocol filtering. Depending on the selected platform and licence, it may include intrusion prevention, application control, web filtering, encrypted traffic inspection, malware protection and centralised security management.

Network segmentation separates systems, users and devices into controlled security zones. This can reduce unnecessary access and make it more difficult for an attacker or malware infection to move laterally from one compromised device to other critical systems.

Yes. Cybit works across on-premises, cloud and hybrid environments. This can include secure connectivity between business locations, data centres, Microsoft Azure, AWS and approved third-party service providers. An existing Cybit network discovery document includes firewall installation, switch configuration, site-to-site connectivity to Azure and third parties, monitoring and application migration planning.

Yes. Cybit can help design and implement secure remote-access controls, including VPN, identity-aware access and appropriate security policies. The objective is to provide employees with the access they need without unnecessarily exposing internal networks and business-critical services.

Network security is an important layer of ransomware defence, but no individual control can eliminate the risk. Firewalls, segmentation, intrusion prevention, web filtering and monitoring can help block malicious traffic and restrict lateral movement. They should be combined with endpoint protection, identity security, vulnerability management, backups and incident response.

Yes. A review can examine hardware and software lifecycle status, subscriptions, firewall rules, internet-facing services, remote access, web filtering, application control, logging, high availability and network segmentation. Cybit has previously identified active attacks against web-facing services protected by firewall infrastructure approaching subscription and hardware end-of-life dates.

Cybit can provide ongoing consultancy, support and managed services following implementation. The final operating model should define responsibilities for alert monitoring, security changes, firmware updates, rule reviews, incident escalation, licensing and lifecycle management.

The first step is a network security discovery session. Cybit will establish your current architecture, key business services, locations, users, cloud dependencies, existing controls and areas of concern before recommending an appropriate design or remediation plan.

Often through the edge rather than around it. Sophos's State of Ransomware in the UK 2026 found firewalls were the most common entry point, at 37%, for attacks that did not start with email or phishing, which is why firewall patching, configuration and lifecycle matter as much as the firewall itself.

Plan their replacement before support ends. The NCSC advises keeping firewalls, routers and remote access appliances within vendor support and replacing them before they reach end of life, because unsupported devices stop receiving the security updates that close known weaknesses.