Guides
6 guides covering security, infrastructure, and DevOps.
Harden Docker on Ubuntu 24.04
Install Docker CE the right way on Ubuntu 24.04, lock down the daemon and socket, stop published ports from bypassing UFW, and run containers with the least privilege they actually need.
Multi-Stage Docker Builds with Scratch: Maximum Efficiency, Minimum Attack Surface
Why building a static Go binary in a multi-stage Dockerfile and shipping it on scratch produces one of the smallest, most secure container images possible — and how every line of the Dockerfile contributes.
Firewalld: Zones, Services & Advanced Rules
A comprehensive guide to firewalld covering zones, services, rich rules, IP management, Cloudflare whitelisting, and everything an administrator needs to lock down a server.
OpenVPN Install & Setup
OpenVPN Install & Setup
Rundeck with Postgres
Step-by-step guide to installing Rundeck with PostgreSQL as the backend database on Ubuntu 22.
SQL Select with Powershell on MSSQL
How to run a SQL SELECT query against a Microsoft SQL Server database using PowerShell.