Networking & Wi-Fi | Gerald's Tech

Networking & Wi-Fi

Reliable, secure networks—designed, implemented, and supported. From edge switches and PoE to controller-based Wi-Fi, SD-WAN, and Zero Trust remote access, I build networks that are fast, resilient, and easy to operate.

LAN & Switching

  • Core/edge design, stacking, L2/L3 segmentation
  • VLANs, trunking, port profiles & access policies
  • PoE/PoE+ budgets for APs, phones, CCTV & access control
  • Spanning Tree, storm control & loop prevention
  • Redundancy (MLAG/VPC) & hitless maintenance where possible
  • QoS for voice/video; multicast & IGMP snooping

Routing, WAN & Internet

  • Edge routing, NAT, policy-based routing & failover
  • Dual-ISP design, LTE/5G backup, SD-WAN optimisation
  • Site-to-site & hub-and-spoke VPN (IPsec/SSL)
  • DNS/DHCP planning, IPAM & addressing standards
  • Cloud on-ramps (Azure/M365) & private access

Wi-Fi Planning & Design

  • Predictive & on-site surveys (heatmaps, SNR, CCI/ACI)
  • AP placement, channel/power plans (2.4/5/6 GHz)
  • Controller-based, cloud-managed & mesh topologies
  • Capacity planning for dense & voice-over-Wi-Fi
  • Outdoor & warehouse coverage (directional/omni)

Wi-Fi Security & Guest

  • WPA3/Enterprise with 802.1X & RADIUS
  • Identity-based access, PSK rotation, PPSK
  • Guest portals, time-limited access, bandwidth caps
  • Segmentation for IoT/CCTV/guests via VLANs & ACLs
  • Wireless intrusion detection/prevention (WIDS/WIPS)

Network Security

  • Next-gen firewalls, IDS/IPS, URL filtering & TLS inspection
  • Micro-segmentation, ACLs, private VLANs
  • NAC/802.1X for users & devices; posture checks
  • Remote access: ZTNA/SASE, MFA & Conditional Access
  • Logging to SIEM (Sentinel), alerting & compliance reports

Integration & Use-Cases

  • CCTV & NVR networks (multicast, storage paths, QoS)
  • Access control panels & relay I/O segments
  • Microsoft 365/Teams QoS & ExpressRoute equivalents
  • Azure hybrid connectivity (VPN/ER), private endpoints
  • Home/Building automation VLANs & secure bridges

Monitoring & Troubleshooting

  • SNMP/NetFlow/Telemetry—dashboards & alerting
  • Syslog, packet capture & client health baselines
  • Wi-Fi QoE checks, roaming analysis & sticky-client fixes
  • ISP monitoring, SLA tracking & incident runbooks

Standards, Docs & Upgrades

  • Config standards, templates & golden images
  • Firmware cadence, staged rollouts & rollback plans
  • Change control, versioned backups & RTO/RPO
  • As-built diagrams, IP plans & handover guides
Clear documentation so your team can self-support with confidence.

Need Faster, More Reliable Networking?

From new office builds to Wi-Fi fixes and multi-site SD-WAN, I’ll design a secure, resilient network with clean configs, clear docs, and measurable results.

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