DNS_PROBE_FINISHED_NXDOMAIN: How to Fix It
Fix DNS_PROBE_FINISHED_NXDOMAIN in Chrome, Windows, macOS, Linux, routers, VPNs, and Pi-hole with a practical DNS troubleshooting workflow.
How to Flush DNS Cache on Windows, macOS, Linux, Chrome, and Routers
Updated June 2026: flushing the DNS cache is one of the fastest first steps when a website moved servers, a DNS record…
Best 2026 Pi-hole blocklists (and how to install them)
Updated June 2026: the best Pi-hole blocklist setup for most home networks is still a small, maintained set of quality lists rather…
DNS Server Not Responding: How to Fix It
Fix the DNS server not responding error with a practical troubleshooting checklist for Windows, macOS, Linux, routers, VPNs, IPv6, and public DNS.
VPN Tunnel Up but No Traffic: How to Fix IPsec Routing Issues
The tunnel shows established. IKE negotiation completed successfully. Phase 2 is up on both sides. But ping fails, and nothing is getting…
How to Install and Configure Pi-hole on Raspberry Pi OS
Pi-hole is used by many people around the world for many purposes. Most commonly, it’s used as an ad-blocker on your local…
How to form a BGP over IPsec tunnel using BIRD and Strongswan
Route based VPNs are becoming more and more common, and it’s important to know how to configure an eBGP peer over an…
How to Install and Configure FreeRADIUS (RADIUS) on Raspberry Pi OS
FreeRADIUS is an open sourced RADIUS server that can be ran on any Linux distribution. It’s exceptionally easy to set up and…
Installing Raspberry Pi OS 6.12 and SSHing into a Raspberry Pi
Raspberry Pi have made it super easy to just pick up an SD card, and have a lab device available at your…
