Gerrit Niessen has an extensive background in network security engineering and customer support. With experience at various companies such as FOD Justitie SPF Justice, Esko, and National Bank of Belgium, Gerrit has managed Cisco networks LAN and WAN, Citrix Netscaler, ExtremeCloudIQ Wifi, internal/external DNS, WSUS, antivirus, Sonicwall MailGateway, and various firewalls. Gerrit's educational background includes a degree in Netwerk support Engineering and certification in CCNA networking.