Core topic
Server Security
Cover the security work that matters when you manage your own servers, including SSH access, firewalls, intrusion prevention and patching. You’ll be able to harden a host, verify its protections and control access for both people and AI agents.
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Ubuntu 24.04 LTS Hardening Checklist: Verify Every Step
Harden Ubuntu 24.04 LTS on a single VPS with SSH keys, firewall rules, security updates, restricted access, and recovery checks you can verify yourself.
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SSH Hardening When an AI Agent Also Has a Key
Harden SSH on Ubuntu 24.04 LTS with separate human and automation keys, a restricted agent account, safe reloads, and a practical key revocation drill.
10 minAug 2026
Fail2ban vs CrowdSec on a Single Server
Compare Fail2ban and CrowdSec on Ubuntu 24.04 LTS. Choose SSH protection or broader attack detection, then verify logs, blocking and safe recovery.
9 minAug 2026