Network & Security Consulting LAN, WLAN & WiFi Expertise

Freelance Network Consultant in Brussels helping businesses across Belgium design, secure, and optimize enterprise LAN and WLAN infrastructures using Cisco, Meraki, and Aruba technologies.

Brussels, Belgium

On-site & remote consulting

Get in touch

Hello ! I'm Haroon Popalzai

An independent Network & Security Consultant LAN & WLAN Expert supporting enterprises, public institutions, and service providers in designing, migrating, and operating reliable networks. Specialized in enterprise WiFi, Network Security, SD-WAN, and High-performance Campus Networks.

WLAN Expertise

Specializing in high-density Wi-Fi environments, predictive designs, and performance optimization.

Network Architecture

Designing scalable, secure LAN/WLAN infrastructures with Cisco, Meraki, and Aruba technologies.

Security Focus

Implementing robust security measures including NAC, VPNs, and SD-WAN solutions.

How I Help My Clients

Consulting Services

  • Enterprise WiFi design & optimization for offices, campuses, and public environments
  • LAN/WLAN migration to modern architectures (Cisco, Meraki, Aruba, SD-WAN)
  • Cisco Meraki, Aruba Networks, and enterprise network deployment in Belgium and SD-WAN implementations
  • Multi-site network standardization
  • Public-sector & large-scale deployments
  • Independent audits & Wi-Fi verification

Focus Areas

WLAN Architecture

Predictive & on-site Wi-Fi design, high-density optimization, RF troubleshooting, and secure access solutions.

LAN & Campus Networks

Cisco Catalyst, Aruba Switching, and scalable campus designs with redundancy.

Security & SD-WAN

Meraki firewalls, client VPNs, Aruba ClearPass, Palo Alto and Fortinet integration.

Technologies & Credentials

Technologies & Core Skills

Networking & Architecture: LAN, WLAN, WiFi, SD-WAN, MPLS, TCP/IP, UDP, DHCP, DNS, SD-WAN, High Availability, Computer Virtualization, F5-Load-balancing Routing & Switching: BGP, OSPF, VLAN, XVLAN, Multi-VLAN Campus Design, Spanning Tree STP, VRF-Lite, Multi-VRF, MPLS Security: Palo Alto (Panorama), Fortinet, IPSec, Site-to-Site, SSL/TLS VPN, Network Segmentation, IDS/IPS, Zero Trust ZTNA, SASE CATO Networks, Cloudflare, Zscaler, Cloudi-fi. Wireless: Cisco Catalyst WLC, Cisco Meraki, Aruba Networks(Switching, Wireless, ClearPass, AirWave, Central), Ekahau Pro Monitoring & Tools: HPE IMC, NMS, PRTG, SolarWinds, Atlassian Jira, Confluence, CMDB, Ticketing System, Network Optimization, CRM System Automation & Cloud: Python, Network Automation, Microsoft Azure, Intune, Generative AI & AI Agents Project & Leadership: Signle Point of Contact (SPOC), Stakeholder Management, Technical Presales, Project Delivery, Project Management, Technical Documentation

Credentials

  • Bachelor in Computer Engineering & Network Administration
  • Ekahau Pro AI - Wi-Fi Design & Site Survey
  • Aruba Certified Mobility Professional - Campus Access
  • Cisco Meraki Solutions Expert
  • Silver Peak SD-WAN Certification
  • CCNP Switching & Routing
  • Microsoft Azure and Intune
  • Palo Alto and Fortinet Firewall Training

Let's Work Together

If you're looking for a freelance network & Security consultant who understands complex environments and delivers clean, scalable solutions, let's talk.

haroon@popalzai.be +32 466 445063 Download my CV
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