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Hardening Linux Environments
The Fortress & The Garden: A Philosophical Guide to Hardening Linux A 50+ Step Journey to Building a Resilient Server Introduction: The Administrator's Mandate In the digital landscape, your Linux server exists in a state of perpetual tension. It is both a fortress that must repel invaders and a living garden—a dynamic system that requires careful cultivation, pruning, and nourishment to thrive securely. Hardening is not a checklist to be completed, but a continuous state of mindful administration. This guide is structured as a journey from the foundation to the parapets, moving from philosophy to concrete command. Part I: Laying the Foundation – Philosophy & Initial Conquest 1 Embrace the Mindset: Internalize the Principle of Least Privilege (PoLP). 2 Document Relentlessly: Create a secure, offline record of every change. 3 Start with a Minimalist Canvas: Begin with a minimal installation. 4 Conquer the Network: Know your server's address and hostname intimately. 5 Claim Your Throne Securely: Use SSH with key-based authentication from the first login. 6 Establish a Sovereign Identity: Set your server's hostname correctly. 7 Build the Outer Wall: Configure the system's basic firewall before enabling services. 8 Install the Sentry: Use ufw (Uncomplicated Firewall). Enable it with default denials. 9 Create the Master Keys: Generate a strong, unique SSH key pair for yourself. 10 Plant Your Flag: Copy your public key to the server. Part II: Constructing the Inner Keep – System Integrity & Access Control 11 Depose the Tyrant: Disable direct root login via SSH (PermitRootLogin no). 12 Banish the Weak: Disable SSH password authentication (PasswordAuthentication no). 13 Narrow the Gate: Change the default SSH port from 22 to a non-standard one. 14 Appoint Trusted Lieutenants: Create a dedicated, unprivileged user account for daily work. 15 Delegate Power Wisely: Add your new user to the sudo...
Surviving Day! Modable Voxel Adventure
Creating a game with ai has been an interesting experiment. World lag is almost fixed. Welcome to the last Demo for Surviving Day! Its a feature rich example of the game that is being made. Players can build computer networks, build cities, explore and mine and cut down forests, play with an advanced economy, and marvel at shaders that really made the game stand out. Modding is being figured out as we speak. That and Multiplayer. Leave a comment about what you think when well in this demo and what could be improved! All bug reporting will help! There is also a new satellite players can launch to use with receivers at other computers :D Download Demo
Working Hard
Welcome to the rebuild of secupgrade.com! The site was hacked and backups failed. So here it is. The site will be back to working order in a few months. And I plan a game release around then as well. Thanks for reading!