Network Security. Knowledge. Experience.
Firewall Support Center is an independent learning hub for engineers who build, operate and secure real-world networks. Everything here comes from hands-on work in the field, not from vendor brochures.
Who is behind this site?
I’m İlhan Çiçek a network and security specialist with 20 years of hands-on experience designing, deploying and troubleshooting firewall and network infrastructure. My day-to-day work covers FortiGate, Palo Alto, Sophos, SonicWall, Zyxel and Aruba platforms, and I lead a team that provides ongoing maintenance and support for [130+] customer environments.
That daily exposure to real incidents, migrations and misconfigurations is what shapes the content you’ll find here.
What you’ll find
- Firewall Technologies: policy design, security profiles, NGFW operations
- Network Engineering: switching, routing, VLANs, wireless
- Cybersecurity: hardening, threat prevention, practical defense
- VPN Technologies: IPsec, remote access, site-to-site, Zero Trust
- CLI Command Library: field-ready commands and configuration examples
- Learning Center: structured paths for IT professionals
Our approach
- Practical first. Every guide aims to be something you can apply the same day.
- Vendor-neutral mindset. We cover multiple vendors and explain the logic behind the configuration, not just the clicks.
- Learn by doing. Configuration walkthroughs, labs and troubleshooting notes built for engineers.
Watch and learn on YouTube
Prefer video? Follow the walkthroughs on our channels:
- Firewall Support Center (English): @Firewallsupportcenter