Blog
Field notes on Linux servers.
SSH, firewalls, hardening and what we learned building atalince. No alarmism.
November 6, 2026 · 2 min read
An applied block is not a verified block
Why atalince separates request, application and firewall read, and what can wipe a rule without anyone noticing.
Read →October 30, 2026 · 2 min read
Why atalince starts in Monitor only
Every new server watches before it blocks. The reasons, and what to do in those first minutes.
October 24, 2026 · 2 min read
The 12 SSH checks in atalince's hardening
What each sshd directive checks, why it matters and how to see the value that is actually in effect.