01 · Cybersecurity and Infrastructure
Network, Perimeter and Segmentation
Deciding what may talk to what, and noticing quickly when something unexpected tries.
Cybersecurity and Infrastructure
Network, Perimeter and Segmentation
Deciding what may talk to what, and noticing quickly when something unexpected tries.
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- 1Map the traffic
- 2Design zones
- 3Apply rules
- 4Monitor and tune
- 5Review and retest
What We Do for You
- Map current traffic and design the segmentation plan.
- Review and rebuild firewall rules, retiring dead ones.
- Replace broad VPN access with per-application access.
- Configure DNS, web filtering and egress control.
- Set the monitoring baseline and tune the alerts.
How this is bought: Bought as a defined project: fixed scope, agreed milestones, handover and training. Build an estimate for your case.
Platforms We Work With
CiscoCheck Point
These are the platforms we work with on client estates. Where a client already owns a different platform, we work with theirs - ARRIX is not tied to any one vendor.
Our Approaches Explained
Next-generation firewall (NGFW)
A firewall that inspects the application inside the traffic, not only the port it arrived on.
Network segmentation and micro-segmentation
Splitting the network so a problem in one area cannot walk into the rest. Micro-segmentation applies the same idea between individual workloads.
Intrusion detection and prevention (IDS / IPS)
Watching traffic for known attack patterns and blocking what matches.
Secure remote access
Replacing broad VPN tunnels with per-application access, so a remote user reaches one system rather than the whole network.
SASE and SD-WAN
Security and connectivity delivered together at the network edge, so branches and remote staff get the same controls as head office.
DNS and web filtering
Blocking connections to known malicious destinations before a session is established.
DDoS protection
Absorbing floods of traffic intended to take a service offline.
Egress control
Restricting what may leave your network, which is how quiet data theft is usually spotted.
The Standards We Work To
CIS Controls v8 (network monitoring and defence)NIST SP 800-41 firewall guidanceMITRE ATT&CK lateral movement techniques
We follow the structure and controls these standards describe. We do not claim to be certified against them - where you need a formal certificate, we prepare the evidence and an accredited body performs the audit.
What You Get
- Network architecture and segmentation plan
- Firewall rule review
- Remote access design
- Traffic monitoring baseline
- Edge protection plan
Segments defined87%
Legacy firewall rules retired72%
Egress paths documented83%
These are the areas clients most often ask us to improve. Your project sets its own targets, measured and agreed with you.