Consultractor Insourced for a Wi-Fi Network Upgrade
Sector: Professional Services
Practice: DeliveryAssure and CyberAssure — Next-Generation Wi-Fi Architecture, Network Segmentation, and Secure Infrastructure Uplift
Objective: Design and deliver a Wi-Fi 6 network upgrade across three Australian office sites — eliminating coverage gaps, improving performance, and strengthening network security through segmentation, centralised management, and the removal of legacy access points carrying unpatched vulnerability risk.
Eight Years of Legacy Infrastructure Is Eight Years of Accumulated Risk
A mid-sized professional services firm with offices in Sydney, Melbourne, and Brisbane was experiencing the predictable consequences of an ageing wireless network. Coverage gaps, slow speeds, and frequent dropouts were undermining productivity and disrupting client meetings. But the operational frustration was the visible symptom — the less visible problem was security.
Access points installed more than eight years earlier were running firmware that had long since fallen behind the threat landscape. Legacy wireless infrastructure at this age typically carries unpatched vulnerabilities, lacks support for modern security protocols, and cannot enforce the network segmentation that separates corporate traffic from guest and device traffic in a way that modern governance frameworks require. The firm needed more than a performance upgrade — it needed a network architecture that was operationally capable and security-sound for at least the next five years.
The 123.EXPERT Approach
123.EXPERT insourced a senior network consultant with deep expertise in wireless architecture, high-density design, and phased infrastructure delivery — deployed as Network Upgrade Lead across all three sites. The engagement addressed performance and security simultaneously:
- Comprehensive wireless site surveys and heat-mapping conducted across all three offices — identifying dead zones, interference sources, bandwidth constraints, and access point placement gaps before any hardware was ordered.
- Wi-Fi 6 upgrade plan developed with optimised access point placement and dynamic channel allocation — designed for the current device density and the growth trajectory the firm anticipated over the following five years.
- Centralised cloud-managed control platform designed and implemented — providing real-time monitoring, automated firmware currency, performance tuning, and a single management view across all three sites.
- Secure, segregated guest network established with bandwidth controls — isolating guest and personal device traffic from the corporate environment and eliminating the lateral movement risk that a flat network creates.
- Phased installation schedule managed with a temporary parallel network maintaining uninterrupted connectivity at each site during rollout — no operational disruption, no forced downtime windows.
Close collaboration with internal IT and operations teams ensured staff were kept informed throughout, on-site validation testing was completed at each stage, and the design was documented to reduce reliance on external expertise for future changes.
Outcome
The upgraded network delivered a 65% increase in average speeds and eliminated previously reported coverage blackspots across all three sites. Video conferencing reliability improved significantly — enhancing both internal collaboration and client interactions in environments where connectivity failure had previously been an accepted and recurring frustration.
The security outcomes were equally significant. The removal of eight-year-old access points eliminated a category of unpatched firmware vulnerability that had been present across the network for years without being addressed. The guest network segmentation removed the lateral movement risk that had existed on a flat network where corporate and guest traffic shared the same broadcast domain. Automated firmware management through the centralised cloud platform ensures the new infrastructure will not accumulate the same vulnerability debt over time.
Centralised management gave the internal IT team the visibility and control to monitor, tune, and resolve network issues proactively — reducing dependence on external vendors for changes that are now within internal capability.
Through 123.EXPERT’s network-based delivery model, the firm achieved a smooth, disruption-free infrastructure upgrade that addressed both the operational performance gap and the security posture gap that the legacy network had created — leaving a Wi-Fi architecture that is faster, more resilient, and more defensible than anything the previous infrastructure could have supported.
