Configure UFW Firewall on Ubuntu
Use UFW (Uncomplicated Firewall) to manage iptables rules on Ubuntu with simple commands.
Updated Apr 24, 2026
beginner
7 min
Create a Non-Root User with Sudo Privileges
Create a regular user account with sudo access as a security best practice for server management.
Updated Apr 24, 2026
beginner
5 min
Set Up Intrusion Detection with OSSEC
Install and configure OSSEC HIDS to monitor your server for suspicious activity and file changes.
Updated Apr 24, 2026
advanced
12 min
Set Up SSL/TLS with Let's Encrypt
Obtain a free SSL/TLS certificate from Let's Encrypt and configure automatic renewal.
Updated Apr 24, 2026
beginner
8 min
Set Up Two-Factor Authentication for SSH
Add an extra layer of security to SSH login using Google Authenticator TOTP.
Updated Apr 24, 2026
advanced
10 min
Harden SSH Access on Linux Servers
Secure your SSH configuration by disabling password authentication, changing the default port, and using fail2ban.
Updated Apr 24, 2026
intermediate
10 min
Set Up SSL/TLS with Let's Encrypt
Install Certbot and obtain a free SSL certificate for your domain using Let's Encrypt.
Updated Apr 24, 2026
beginner
7 min
Enable Two-Factor Authentication on Your Account
Secure your LightYear account with TOTP-based two-factor authentication.
Updated Apr 24, 2026
beginner
3 min
Security Best Practices for GPU Servers
A comprehensive security checklist for GPU servers running ML workloads.
Updated Apr 24, 2026
intermediate
9 min
Rotate and Manage API Keys
Best practices for creating, rotating, and revoking LightYear API keys.
Updated Apr 24, 2026
beginner
4 min
Compliance and Data Residency
Understand LightYear's compliance certifications and how to configure data residency for regulated workloads.
Updated Apr 24, 2026
intermediate
6 min