20 guides for hardening, encryption, authentication and best practices.
Comprehensive guide to hardening Linux systems against attacks.
Secure SSH configuration and best practices for remote access.
Kernel parameters and configurations for enhanced security.
Secure configuration of common system services.
Pluggable Authentication Modules configuration and security.
Secure SSH key generation, deployment, and management.
Centralized authentication with LDAP and Active Directory integration.
Implementing TOTP and other 2FA methods for Linux systems.
GNU Privacy Guard for file encryption and email signing.
Full disk encryption with LUKS for Linux systems.
SSL/TLS certificate management, best practices, and implementation.
Encrypt individual files and directories with various tools.
Configure the Linux audit framework for security monitoring.
Centralized logging, analysis, and security monitoring.
Host and network-based intrusion detection with OSSEC, Snort, and Suricata.
Monitor file changes with AIDE, Tripwire, and other FIM tools.
Network discovery and security auditing with nmap.
Automated security auditing and hardening suggestions with Lynis.
Protect services from brute-force attacks with fail2ban.
Open-source antivirus for Linux servers and mail gateways.
