TL;DR Introduction to Keepalived Installation of Keepalived on Debian 13 Configuration of Keepalived Setting Up Virtual IP Addresses Testing Failover Scenarios Verification TL;DR Keepalived provides a robust solution for implementing failover and high availability in Debian 13 environments. By leveraging VRRP (Virtual Router Redundancy Protocol), Keepalived allows multiple servers to work together, ensuring that if one server fails, another can take over seamlessly.

TL;DR Introduction to OpenSCAP Installation of OpenSCAP Running Compliance Scans Reviewing Scan Results Cautions Safe Defaults Automating Compliance Checks Verification TL;DR OpenSCAP is a powerful tool for performing compliance audits on Debian 13 systems. It helps ensure that your server adheres to security standards and best practices. Here’s a quick guide to get you started:

TL;DR Installation of GoAccess Configuring GoAccess Setting Up Fail2ban Integrating GoAccess with Fail2ban Verification Rollback TL;DR To monitor logs effectively with GoAccess and integrate it with Fail2ban on Debian 13, follow these concise steps: Install GoAccess: Ensure you have GoAccess installed to analyze web server logs. Use the following command:

TL;DR Understanding Port Scanning Installing and Configuring Fail2Ban Using iptables for Blocking Scans Monitoring Logs for Suspicious Activity Using Snort for Advanced Detection Configuration Running Snort Caution Safe Defaults Verification TL;DR To detect and block port scanning on your Debian 13 server, follow these concise steps: Install and Configure Fail2Ban: This tool helps to monitor logs and block suspicious IP addresses.

TL;DR Installation of rclone Configuring rclone for Cloud Storage Setting Up Encryption Uploading and Downloading Encrypted Files Downloading Files Additional Options Safe Defaults Verification of Encrypted Files Rollback Procedures TL;DR To use rclone with encrypted cloud storage on Debian 13, follow these concise steps: Install rclone: Ensure you have the latest version of rclone installed.

TL;DR Understanding Bastion Hosts Prerequisites Installing and Configuring the Bastion Host Implementing Security Best Practices Verification TL;DR To set up a bastion host for secure remote administration on Debian 13, follow these key steps: Install OpenSSH Server: Ensure the SSH server is installed and running. sudo apt update && sudo apt install openssh-server # Install OpenSSH sudo systemctl enable ssh # Enable SSH to start on boot sudo systemctl start ssh # Start SSH service Configure SSH for Security: Edit the SSH configuration to enhance security.

TL;DR Installation of WireGuard Configuration of WireGuard Server Configuration of WireGuard Client Firewall and Routing Setup Verification Rollback TL;DR To set up WireGuard VPN on Debian 13, follow these concise steps: Install WireGuard: Ensure your package list is updated and install WireGuard: sudo apt update && sudo apt install wireguard Generate Key Pairs: Create a private and public key for the server:

TL;DR Understanding Rate Limiting Setting Up IPTables on Debian 13 Creating Basic Rate Limiting Rules Implementing Advanced Rate Limiting Techniques TL;DR To implement advanced rate limiting using IPTables on Debian 13, follow these concise steps to protect your server from abuse while ensuring legitimate traffic is not hindered. Install IPTables (if not already installed):

TL;DR Introduction to Auditd Installation of Auditd Configuration of Auditd Monitoring and Analyzing Audit Logs Setting Up Alerts for Security Events Verification TL;DR Auditd is a powerful tool for tracking security events on Debian 13 systems. It provides detailed logs of system calls and can help identify unauthorized access or changes.

TL;DR Understanding AppArmor Installing AppArmor on Debian 13 Creating and Modifying AppArmor Profiles Modifying an Existing Profile Reloading Profiles Cautions and Safe Defaults Loading and Enforcing Profiles Verification Rollback TL;DR To configure AppArmor profiles for web servers on Debian 13, follow these summarized steps: Install AppArmor: Ensure AppArmor is installed and running on your server.