2 min readTutorial
A guest Wi-Fi setup that won’t expose the office
How to give visitors internet access without putting file shares, cameras, and printers on the same network as your coffee-shop guests.
Networking
15 articles
1 min read
Secure Wi‑Fi for hybrid offices
Hybrid schedules mean more unknown devices on site. Design for that.
1 min read
Firewall rule reviews that find surprises
Any-any rules and forgotten NAT entries accumulate. Schedule the cleanup.
1 min read
Choosing a business ISP failover plan
Cable + LTE/5G failover patterns that keep payments and cloud apps online when the primary circuit dies.
1 min read
Guest Wi‑Fi terms and logging
Captive portals are not only marketing: they set expectations and basic accountability.
1 min read
Wi‑Fi password rotation myths
Rotating the PSK every week is not a strategy. Segmentation and enterprise auth are.
1 min read
IoT cameras and NVRs on your LAN
Default passwords and UPnP still ship with many “security” cameras. Segment them before they segment you.
1 min read
Separating Wi‑Fi for POS and office
Payment devices and office laptops should not share a flat network. A practical segmentation sketch.
1 min read
Wi‑Fi guest networks done right
Separate guests from production without making the lobby password a company secret.
1 min read
VPN split tunneling tradeoffs
Full tunnel vs split tunnel is a security and performance comparison. Make it on purpose.
1 min read
Patching NAS devices
NAS firmware holes are quiet until ransomware finds the share.
1 min read
When to replace that aging firewall
End-of-support appliances quietly become unpatchable internet doors. How to plan a refresh without drama.
1 min readTutorial
DNS and email authentication: SPF, DKIM, and DMARC
A plain-language tour of the three records that decide whether your mail looks legitimate.
1 min readTutorial
Documenting your network for the next person
A one-page network truth file beats a heroic tribal-knowledge culture.
1 min read
VPN vs zero trust for small firms
When a classic VPN is enough, when it becomes a liability, and what “zero trust” means without the buzzwords.