Request a consultationNetwork controls designed as an operating system
Bring firewall policy, segmentation, VPN, intrusion prevention, web controls and logging into a manageable network-security design.
Where the work begins
Unified Threat Management (UTM) platforms combine multiple network-security functions in one administrative system. Consolidation can simplify deployment, but it does not replace sound architecture or ongoing rule ownership. Atmic helps organisations translate business traffic into firewall policy, separate network zones, plan secure remote and site access, tune appropriate inspection and logging, and prepare a practical lifecycle for updates, reviews and eventual renewal.
Problems we help address
Scope and capabilities
Final scope depends on the environment, priorities, product entitlements and agreed responsibilities.
Document required flows and translate them into specific source, destination, service and action rules. Assign business and technical owners, descriptions, review dates and change records where the platform supports them.
Separate user, server, guest, management, voice, IoT or other relevant zones and control the traffic between them. Segmentation choices consider switching, addressing, routing and application dependencies outside the UTM appliance.
Plan site-to-site and remote-access VPNs, authentication, address pools, permitted resources, split or full tunnelling, client deployment and access revocation according to the use case.
Select and tune relevant prevention signatures, application or web categories, exclusions and update behaviour. Begin with visibility or pilot groups where a blocking change could affect business applications.
Set system time, log categories, local or external destinations, retention expectations and actionable alert routes. Document which events require review and who has responsibility to respond.
Record firmware, subscription, support, certificate, backup and hardware lifecycle requirements. Plan configuration backups, tested restoration, administrative access and safe maintenance windows.
Potential business benefits
Practical use cases
Assess internet capacity and existing rules, size the platform for required inspection, rebuild a justified policy, migrate connectivity and validate business services before retiring the previous firewall.
Map application flows and create controlled zones for servers, users, guests and management. Pilot restrictions, monitor denied traffic and resolve hidden dependencies before final enforcement.
Design site and user VPN access with suitable authentication, routes, device expectations, capacity, failover assumptions and a supportable client rollout.
Assessment and implementation
Each stage establishes evidence for the next decision. The sequence is adjusted to suit risk, dependencies and change windows.
Inventory internet links, addresses, VLANs, routes, exposed services, VPN peers, administrative paths and the business applications that cross boundaries.
Agree trust zones, allowed flows, remote access, inspection functions, availability expectations, throughput assumptions and required subscriptions.
Configure offline or in a controlled environment, protect administration, update software and signatures, and test routing, policy, VPN, logging and backup restoration.
Use an approved change window, capture the prior state, move connections in a defined order, validate critical flows and retain a tested rollback route.
Review observed traffic and false positives, close temporary access, document the final baseline and assign recurring operational tasks.
Typical deliverables
Planning considerations
Frequently asked questions
A UTM platform includes firewall functions and typically combines other capabilities such as VPN, intrusion prevention, web or application controls and logging. Feature depth varies by vendor, model and subscription, so requirements should be mapped to the exact platform.
No. Network controls cannot inspect every device state, off-network activity, local execution or user action. UTM, endpoint protection, identity controls, application security, email protection, backup and response processes cover different parts of the risk.
It can expose undocumented dependencies. Traffic observation, application-owner workshops, pilot enforcement and review of denied connections reduce disruption. Required flows are allowed deliberately rather than retaining broad access indefinitely.
No. Features affect capacity and application behaviour, and defaults may not match the environment. Prioritise by risk, confirm licensing and sizing, pilot representative traffic and introduce blocking controls with monitoring and rollback.
The engagement should name an internal owner or a separately contracted monitoring service. Atmic can configure agreed alerts and handover procedures, but a project deployment does not create a staffed 24/7 SOC or response commitment.
Unified Threat Management
Share the current environment, desired outcome and timeline. We’ll help define the right next conversation.