Tag: security

iptables is being phased out. nftables is faster, cleaner, and already the default on modern Linux. Here's how to actually use it without wanting to quit.

Snort invented network intrusion detection. Suricata multi-threaded its way past it. Here's how to set up real IDS/IPS on your home lab and actually understand what it's telling you.

A Software Bill of Materials tells you exactly what's in your software. Syft generates one, Grype scans it for CVEs. Together they're your supply chain paper trail.

Authelia is a bouncer. Authentik is the whole security desk. Pick the right self-hosted SSO for your home lab, with working configs, gotchas, and a migration path.

Pulling unscanned images onto your server is a gamble. Trivy finds the CVEs. Cosign proves the image hasn't been swapped out. Here's how to add both to your workflow.

Falco watches every syscall your containers make and screams when something sketchy happens. Like someone exec'ing a shell inside your nginx container at 3am.

Real cloudflared config: many services on one tunnel, Access policies, origin TLS, what quick tunnels are for, and what Cloudflare can see in your traffic.

You're pulling container images from strangers on the internet. Trivy scans them for CVEs. Cosign proves they haven't been tampered with. Use both.

Fail2ban bans IPs that attack you. CrowdSec bans them before they attack you, using community threat intelligence. Here's how to set up both and why you might want both.

Adding TOTP to SSH and sudo takes 10 minutes and makes password spray attacks useless. Here's the setup that won't lock you out of your own server.

OpenVPN is the battle-tested workhorse. WireGuard is everything VPNs should have been from the start. In 2026, here's which one you should actually use.

Managing authorized_keys across 10 servers is how you lose track of who has access to what. An SSH CA lets you sign keys and revoke access without touching every server.