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Karel Zwart
@zandwoestijn
Network and Firewall Engineer
Netherlands
English, Dutch
About me
Network and firewall specialist focused on Fortinet FortiGate environments. Experience configuring, securing and troubleshooting business networks.
Work includes FortiGate firewall configuration, VPN setup (site-to-site and SSL VPN), firewall policy design, NAT configuration, VLAN segmentation and security hardening.
Support for both new FortiGate deployments and troubleshooting existing firewall environments. Work is performed remotely with focus on stable, secure and maintainable network configurations.
Skills
Karel Zwart
Offline •
Average response time: 1 hour
See my services
Technical Support
I will configure your fortigate firewall, VPN and vlan
Technical Support
I will setup site to site ipsec VPN on fortigate
Portfolio
Work experience
Junior Network Engineer
VJFK IT • Part-time
Aug 2025 - Present • 11 mos
Responsible for supporting and maintaining network infrastructure in business environments. Work includes configuring and troubleshooting firewalls, VPN connections, network routing and internal connectivity. Tasks include: FortiGate firewall configuration and troubleshooting Site-to-site VPN and SSL VPN configuration Firewall policy management and security improvements Network troubleshooting and connectivity diagnostics VLAN configuration and network segmentation NAT and routing configuration Monitoring network performance and resolving incidents Focus on maintaining stable, secure and well-structured network environments.
1 Reviews
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nikhilgorityala
United Arab Emirates
Stijn showed an excellent level of effort throughout the project. They were dedicated, detail-oriented, and consistently worked to ensure high-quality results were delivered on time. Their commitment and proactive approach were clearly reflected in the final outcome.
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