Security Tools

Generate a secure CORS policy from presets or custom options and copy ready-to-paste configuration for 14 stacks: Nginx, Apache, Express, Node, FastAPI, Flask, Django, ASP.NET Core, Spring Boot, Caddy, Traefik,...

Practical bug-bounty onboarding for sysadmins: skill transfer map, 2026 tooling stack (amass, nuclei, Burp, ffuf), picking your first program, the 5-phase weekly workflow, bug classes you spot faster than anyone,...

Step-by-step Vaultwarden quickstart for sysadmins: docker compose + Caddy with automatic TLS, first admin signup, disable open signups, point Bitwarden clients at your server, then day-2 hardening with fail2ban, restic...

Complete DNS over HTTPS implementation walkthrough for sysadmins — what DoH protects, picking a provider vs self-hosting, configuring Windows / Linux / macOS endpoints, deploying unbound + dnsdist as your...

Detailed 2026 comparison between pfSense Community Edition 2.7 and OPNsense 24.7: UI, release cadence, plugin ecosystem, performance on prosumer hardware (Intel N100 benchmarks), appliances, and a per-use-case verdict with a...

Three concrete hardware paths to run Wazuh single-node on under 100 EUR, under 200 EUR or under 10 EUR per month — Raspberry Pi 5, Intel N100 mini-PC, Hetzner CAX21...

Stand up a self-hosted WireGuard VPN on a 5 EUR VPS: pick split vs full tunnel, generate Curve25519 keys, write the server and client configs, wire up MASQUERADE + IP...

32 sysctl toggles grouped by subsystem (network, kernel, filesystem, process / BPF / modules), ordered by impact, with a ready-to-drop /etc/sysctl.d/99-hardening.conf, a one-liner drift check, and per-key gotchas for Docker,...

Stand up a working Capture-The-Flag homelab on Hyper-V: enable the role, create three trust-segmented virtual switches, build a Kali attacker, attach Metasploitable3, DVWA and a vulnerable Windows 10, plug in...

Stand up a working detection lab: install Wazuh manager + indexer + dashboard, plug in Suricata IDS, enroll Linux/Windows/macOS agents, ship logs through Filebeat, and triage MITRE-mapped alerts in Kibana...