This is how I approach networks: understand the traffic, simplify the design, verify the result. Everything below was designed, configured and tested by me.
A small office LAN drowning in broadcast noise. I segmented staff, IoT and guest traffic into VLANs, cleaned up trunks, moved DHCP to the router and applied baseline ACLs between segments.
Stack: Cisco IOS · Packet Tracer / GNS3 · VLANs · ACLs · DHCP
Scorekeepers and timers needed reliable Wi-Fi across a 900 m² hall. I deployed OpenWRT nodes on a wired spine with fast roaming, tuned 2.4 and 5 GHz channels for the venue.
Stack: OpenWRT · 802.11 roaming · RF tuning · Linux
Commercial scoring machines are expensive, so I built one. Debounced weapon inputs, 12 V lamp drivers, USB serial link to a laptop HUD, all in a 3D-printed case from my own KiCad design.
Stack: Arduino · C · KiCad · 3D printing
Continuous CCNA-level labbing: subnetting drills, OSPF topologies, NAT scenarios in GNS3. Plus every site I host, including this one, doubles as ops practice: DNS, TLS, caching, backups.
Stack: GNS3 · Cisco IOS · LiteSpeed · DNS · Backups
