Security

Practical security articles for Linux systems and the people who run them. Encryption, authentication, hardening, audit logs — the things that get you to "good enough" without buying a dashboard.

Encryption

GPG in Practice

Key generation, signing, encryption, revocation.

Auth

Two-Factor Authentication with TOTP

How TOTP actually works, and how to self-host it.

Storage

LUKS Full-Disk Encryption

cryptsetup, key slots, boot, recovery.

Server

fail2ban Configuration

Jails, filters, actions — banning the noise.

Auditing

Linux Audit Logs with auditd

Rules, ausearch, what to actually watch.

Server

SSH Hardening on Linux

Key-only auth, port choice, fail2ban, audit log.