Advanced Network Security
L3-L7 threat prevention with in-line IPS, east-west micro-segmentation and encrypted-traffic visibility via TLS interception. Central policy management across distributed sites so malicious traffic is blocked in motion rather than discovered post-breach via log analysis.
Overview
A perimeter firewall on its own has not been enough for years. Threats arrive inside encrypted sessions, at the application layer, and behind credentials that were legitimately issued. Advanced Network Security builds defence in depth across every boundary traffic crosses: internet edge, internal segmentation, data centre, cloud edge, and remote access. Next-generation firewalls, intrusion prevention, TLS decryption, and network detection and response each cover what the layer beside them cannot see.
Clevertek scopes every engagement to your environment — capacity, sites, compliance and support model — so you get a tailored plan rather than a fixed SKU. Pricing is quote-only, and our solutions architects will work through your requirements before any proposal.
Our approach
We design the architecture around your traffic patterns, application mix, and compliance obligations, then deploy it boundary by boundary: internet edge, site-to-site WAN, data centre segmentation, cloud virtual networks, and remote access. Each boundary gets the control it needs, whether that is an NGFW inspecting at the application layer, IPS covering signatures and behaviour, TLS decryption so encrypted traffic is not a blind spot, or NDR sensors watching for movement inside the network. Policy is centralised and management is unified, so a rule change lands everywhere it applies.
Why work with us
Boundary decisions made with you, not for you
We map your traffic and application mix first and propose controls per boundary with the trade-offs stated. If decryption, inspection, or segmentation would break a workflow, you hear it before deployment rather than during an incident.
One policy plane across every boundary
Perimeter, internal segmentation, data centre, and cloud virtual networks are governed by a single policy set, so a change is written once and enforced everywhere it applies.
Inspection that keeps pace with encryption
TLS decryption sits at the perimeter with hardware acceleration sized for your throughput, so encrypted traffic is inspected rather than exempted. Encrypted sessions account for the majority of modern attack traffic.
Detection inside the network, not only at its edge
NDR sensors sit on internal segments to catch lateral movement, beaconing, and exfiltration that a perimeter device never observes.
Rollout sequenced to avoid outages
Security policy changes are staged boundary by boundary with rollback points, so tightening the estate does not take sites offline during a change window.
Evidence produced continuously
Firewall, IPS, NDR, and DNS events are correlated into one incident timeline, and logging feeds compliance reporting as an ongoing output rather than a periodic documentation sprint.
Key benefits
What this solution delivers for your business.
Encrypted traffic stops being a blind spot
TLS decryption at the perimeter inspects sessions that would otherwise pass through unread, so malware command-and-control, exfiltration, and phishing payloads travelling inside encryption are detected.
Lateral movement is caught after the perimeter falls
Internal NDR sensors detect an attacker moving between systems once the edge is breached, which is the stage where dwell time is usually longest and damage is decided.
Policy follows the application, not the port
Applications are identified by behaviour, so sanctioned tools are permitted, shadow IT is blocked, and business-critical services keep guaranteed capacity at the network layer.
Less time between compromise and detection
Multi-layer detection catches an intrusion at different stages of the attack chain: initial access at the perimeter IPS, lateral movement at the NDR sensors, exfiltration at the data controls.
Compliance evidence without a documentation sprint
Centralised policy management and unified logging produce network security evidence for PCI DSS, HIPAA, SOC 2, and ISO 27001 as a by-product of operations.
Consistent controls as the estate grows
Headquarters, branches, data centres, and cloud environments inherit the same policy from a central management plane, so adding a site does not mean writing a firewall configuration from scratch.
What's included
Part of this managed service.
Next-generation firewall (NGFW)
Stateful inspection with application-level control, user identity awareness, and integrated intrusion prevention.
- Application identification
- User/group-based policies
- Integrated IPS
- TLS/SSL decryption
Intrusion prevention (IPS)
Signature-based and behavioural detection covering known exploits, previously unseen attacks, and protocol anomalies.
- 5,000+ IPS signatures
- Behavioural detection
- Protocol anomaly detection
- Automated blocking
Network detection and response (NDR)
Internal sensors detecting lateral movement, beaconing, data exfiltration, and DNS tunnelling.
- Internal segment deployment
- Machine learning detection
- C2 and beaconing detection
- DNS security
Network segmentation
Segmentation enforced at the network level across user, server, OT, and guest zones.
- VLAN and zone segmentation
- Inter-zone firewall policies
- Micro-segmentation
- Zero-trust network segments
Centralised management and logging
A single policy manager and log aggregator for perimeter, internal, data centre, and cloud devices.
- Centralised policy management
- Unified logging
- SIEM integration
- Compliance reporting
Where it helps
Real-world scenarios where this solution delivers measurable outcomes.
Zero-trust network architecture
Network controls are aligned to zero-trust principles: micro-segmentation, identity-based access, encrypted traffic inspection, and continuous verification at each access point.
Data centre and cloud edge security
The same NGFW policies, IPS, and NDR coverage extends across on-premise data centres and AWS, Azure, or GCP virtual networks.
Remote access security upgrade
Basic VPN is replaced with identity-aware, inspected remote access: TLS-decrypted, IPS-protected, and monitored by NDR for remote users.
Questions buyers actually ask
What is the difference between NGFW and traditional firewall?
Traditional firewalls filter by port and protocol. NGFWs add application identification based on behaviour rather than port number, user and group awareness integrated with your directory, and intrusion prevention in the same device.
Does TLS decryption impact performance?
Modern NGFWs carry dedicated hardware for TLS decryption. Throughput impact is typically 5-15%, and appliances are sized so full decryption runs at wire speed.
Can I deploy this alongside my existing firewall?
Yes. NGFWs can be deployed at internet edges while integrating with existing internal firewalls, or a perimeter-only firewall can be replaced with the multi-layer architecture outright.
How does this support remote users?
Remote users connect through ZTNA or VPN terminating on the NGFW, so their traffic is decrypted, inspected by IPS, and held to the same policy as on-site traffic.
Ready to scope a solution?
Talk to a Clevertek solutions architect about your requirements — no obligation.