Firewall Management (UFW/nftables)
Lock down access to your cloud-hosted apps.
Blogs
SSH Configuration and Port Forwarding
Secure and flexible remote access and tunnels.
Understanding DNS and Name Resolution
How DNS and /etc/hosts affect your services.
Troubleshooting with ip, ss, dig, curl
Essential network tools every engineer should know.
Advanced Environment Management
Taking Your DevOps Skills to the Next Level.
Environment Variables and Profiles
Set up and manage shell environments.
Cron and Systemd Timers
Schedule tasks the Linux way.
User, Group, and sudo Management
Control access and manage privileges effectively.
Managing Services with systemd
Start, stop, enable, and debug services on Linux.
Linux Directory Structure for DevOps Context
Understand key Linux directories relevant to containers and logs.