Security & Hardening
Firewall rules, fail2ban, and SSH hardening guides.
5 articles
Setting Up UFW Firewall
Manage iptables rules with UFW to protect your server.
7 minBeginner
Installing fail2ban
Auto-ban IPs that repeatedly fail SSH and other service auth.
8 minBeginner
SSH Key Authentication
Secure SSH with ed25519 key pairs — no more passwords.
6 minBeginner
Free SSL with Let's Encrypt
Install free SSL and force HTTPS on your web server.
5 minBeginner
DDoS Protection at Power Down
How multi-layer DDoS scrubbing protects your server.
9 minBeginner
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