Blogs
pinglog
Shell scripts for ping troubleshooting: one detects IPv4/IPv6 connectivity failures with timeout alerts, another timestamps all ping output for detailed logging and analysis.check-soa
check-soa is a CLI tool written in go which lets a DNS name server administrator easily verify that all servers listed as authoritative are in sync and serving the same zone by verifying the SOA record. I use this tool nearly every day at work to verify that changes have propagated to all slave nameservers.VM Moves
Moving services out of the basement into a half-cabinet: OpenBSD edge router advertising IPv4/IPv6 space, ESXi host for VMs, Cisco switching, APC UPS, and initial site/monitoring DNS migrations.GeoDNS
Comparing GeoDNS approaches: BIND with GeoIP patches versus the Go-based abh/geodns, tradeoffs between package maintenance and flexibility, and plans to pair GeoDNS with traditional authoritative DNS.Raspberry Pi DNS/DHCP Server
Building a home lab DNS/DHCP appliance on Raspberry Pi: installing ISC DHCP and BIND, wiring dynamic DNS updates, and serving multiple VLANs with relay helpers.