I'm an aspiring Network Engineer from the Czech Republic. I have completed CCNA I – Introduction to Networks at Czech Technical University in Prague and I actively build networking projects in GNS3.
I enjoy designing networks and understanding how routing, security, and monitoring work together in real-world scenarios.
- Build a strong junior network engineer portfolio
- Improve network security and firewall rules
- Learn how to work with firewalls in network labs
- Learn MikroTik RouterOS in GNS3
- Build better and more complex networks
- Networking: VLAN, Inter-VLAN routing, static routing, OSPF, NAT/PAT, ACL, VRRP, GRE tunnels, LACP, RSTP, NTP, Syslog...
- Network security: OPNsense firewall, firewall rules, NAT, RADIUS authentication
- Monitoring: Zabbix, Wireshark, basic traffic analysis
- Server services: DHCP, DNS, HTTP (Apache2 / IIS), SSH, RADIUS server
- Lab tools & virtualization: GNS3, Cisco Packet Tracer, VirtualBox, KVM/QEMU
- Operating systems: Windows, Linux, Windows Server 2022
- Documentation: Obsidian, Visual Studio Code, Markdown
I’m building a portfolio of projects in Packet Tracer and GNS3. These projects show my progress from simple labs to more complex networks. You can find all my projects and labs in the repositories section.
- 📍 Location: Czech Republic
- 💼 LinkedIn: Lukáš Dula
- ✉️ Email: letifers@gmail.com





