Cloud, Security & Operations
Network Security
Design, hardening and review of firewalls, VPNs, wireless and internal segmentation across offices, data centres and branch sites, so a single compromised device cannot reach everything.
Capability overview
What network security involves
Many internal networks are still flat: once an attacker lands on one laptop or printer, every server is reachable. Network security work introduces segmentation, tightens the firewall rules that have accumulated over years and replaces remote access methods that expose too much.
Firewall rule bases are reviewed line by line for overly broad, unused and shadowed rules. Segmentation separates user devices, servers, operational technology and guest traffic, and remote access moves towards identity-aware approaches rather than VPNs that grant full network reach.
Changes are always staged in maintenance windows with a tested rollback, because a mistaken firewall rule can stop a business as effectively as an attacker.
What is included
What is covered
Firewall rule review
Rules on Fortinet, Palo Alto, Cisco, Sophos or cloud firewalls analysed for any-any rules, unused entries and missing logging, with a cleaned rule set proposed.
Segmentation design
VLANs, zones and access policies that isolate servers, payment systems, CCTV and plant equipment from general user traffic.
Secure remote access
VPN configuration hardened with multi-factor authentication, or replaced with zero trust network access for specific applications.
Wireless security
WPA3 or 802.1X enterprise authentication, rogue access point checks and guest networks isolated from corporate resources.
How we work
How we deliver network security
Topology mapping
Network diagrams rebuilt from device configurations and traffic data so the review starts from reality.
Configuration export
Firewall, switch and VPN configurations collected and analysed offline, avoiding changes during the review.
Risk analysis
Paths from user networks and the internet to critical systems traced to find where segmentation is missing.
Change planning
Rule and segmentation changes grouped into maintenance windows, each with a rollback plan and test steps.
Implementation and verification
Changes applied in stages and verified with traffic tests so business applications keep working.
Related capabilities
Related capabilities in Cybersecurity
Endpoint Security
Protection for laptops, desktops, servers and mobile devices through endpoint detection and response, hardening, patching and device management that works for remote and office staff.
Identity & Access Management
Single sign-on, multi-factor authentication, joiner-mover-leaver automation, privileged access control and access reviews that make sure the right people have the right access, and no more.
Data Security
Discovery, classification and protection of sensitive data across databases, file shares, SaaS and cloud storage, including encryption, key management, data loss prevention and DPDP Act readiness.
Security Monitoring
Collection and analysis of security logs from endpoints, cloud, identity and network systems in a SIEM, with detection rules tuned to your environment and analysts who triage alerts around the clock.
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Where this applies
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Questions & answers
Questions about Network Security
Cannot find what you need? Our team responds to technical and commercial questions within one business day.
Ask a questionUsually yes. Most modern switches and firewalls support VLANs and zone policies, so segmentation is introduced gradually, one group of systems at a time.
We can. Ongoing rule change management and monitoring can move to a managed security service once the rule base has been cleaned up.
A single firewall pair with a few hundred rules is typically reviewed in one to two weeks. Larger estates with many sites are scoped per device.
Yes, with care. Plant networks are assessed passively first, since active scanning can disrupt older controllers, and segmentation follows the zone and conduit model described in the IEC 62443 standard.
Next step
Discuss network security with Acmez
Share what you need to change, build, integrate or support. We will map the practical next step.