TL;DR Understanding TLS 1.3 Installing Nginx with TLS 1.3 Support Configuring Nginx for TLS 1.3 Testing and Validating TLS 1.3 Configuration Monitoring and Maintaining TLS Security Rollback Procedures TL;DR To secure your Nginx server with TLS 1.3 on Debian 13, follow these best practices: Update Packages: Ensure your system and Nginx are up to date to leverage the latest security features.

TL;DR System Updates and Package Management Firewall Configuration SSH Hardening Fail2Ban Installation Regular Security Audits Verification TL;DR To harden your Debian 13 server for internet-facing applications, follow these essential steps: Update the System: Ensure all packages are up-to-date to mitigate vulnerabilities. sudo apt update && sudo apt upgrade -y # Update package lists and upgrade installed packages Configure the Firewall: Use ufw to allow only necessary ports.

TL;DR Introduction to UFW and Fail2ban Installing UFW Configuring UFW Rules Installing Fail2ban Configuring Fail2ban Verification TL;DR To quickly secure your Debian 13 server, follow these steps to set up UFW (Uncomplicated Firewall) and Fail2ban. Install UFW and Fail2ban: Ensure both packages are installed on your system. sudo apt update && sudo apt install ufw fail2ban -y # Install UFW and Fail2ban Configure UFW: Start by setting default policies to deny incoming connections and allow outgoing ones.

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