Networking
DHCP vs DNS: What Breaks When Each One Fails
DHCP gives devices network settings. DNS turns names into addresses. Knowing the difference fixes a huge number of home and office network problems.
Cat5e vs Cat6 vs Cat6A: What To Buy and What To Avoid
Cat5e is often enough for 1GbE and 2.5GbE. Cat6 is a practical home default. Cat6A is the safer 10GbE long-run choice.
Access Port vs Trunk Port: VLAN Ports Explained
Access ports carry one normal endpoint VLAN. Trunk ports carry multiple tagged VLANs between switches, routers, firewalls, and access points.
Orange Pi 6 vs Raspberry Pi 5 for Homelab: Powerful Hardware, Real Tradeoffs
Orange Pi 6 brings dual 2.5GbE, dual NVMe, LPDDR5, and serious AI claims to a tiny board, but software support and total cost decide whether it belongs in your homelab.
Tailscale vs WireGuard vs Cloudflare Tunnel vs Reverse Proxy
A practical remote access comparison: Tailscale, raw WireGuard, Cloudflare Tunnel, and reverse proxies solve different homelab problems.
NAS vs DAS vs Mini PC: The Storage Decision Tree
A practical decision tree for choosing NAS, DAS, or mini PC storage based on who needs the files, how apps run, and how recovery should work.
Cisco Catalyst C9550 vs C9350: Choose the Right Campus Role
Map C9350 access requirements and an incumbent C9500 design to a C9550 model, then verify software, optics, licensing, failure tests, and rollback before migration.
The Beginner Homelab Buying Guide: Start Small, Upgrade Later
A no-regrets beginner homelab buying guide: start with one useful workload, buy the boring basics first, and upgrade when the lab earns it.
Branch Network Design for the AI Era
AI-era branch design needs SD-WAN, SSE, secure access, local resilience, application steering, Wi-Fi capacity, segmentation, and experience telemetry.
Resilience Planning for Cisco Networks: Patch, Shield, Replace, or Segment
A practical resilience model for Cisco networks should classify each exposure into patch, shield, replace, or segment, with owners, deadlines, and evidence.