subuilds.dev
Topic

Linux Server Administration

2 posts in this topic

1
March 15, 2026

Linux Server Security Baseline: What Every DevOps Engineer Should Apply

Seven hardening steps to run on any fresh Debian or Ubuntu server — whether it is an AWS EC2 instance, a GCP VM, or bare metal. SSH hardening, UFW, Fail2ban, and automatic security updates.

linuxdebianubuntu
14 min
March 16, 2026

Fail2ban on Debian 13: The Right Config for OpenSSH 9.x

linuxdebiansecurity
7 min