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Fail2ban is a powerful, open-source tool that enhances server security by monitoring log files for suspicious activity and automatically updating firewall rules to block IP addresses that exhibit malicious behavior, such as repeated failed login attempts. It provides robust protection against brute-force attacks and other unauthorized access attempts.

Features of Fail2ban:

• Monitors log files for suspicious activity and potential security threats.
• Automatically updates firewall rules to block malicious IP addresses.
• Configurable filters to protect various services such as SSH, FTP, and HTTP.
• Customizable actions for different types of security events.
• Support for multiple log file formats and protocols.

To check Fail2ban version run : $fail2ban-server --version on your VM.

Disclaimer: Fail2ban is open-source software distributed under its own licensing terms. It is not affiliated with, endorsed by, or sponsored by any other company. Fail2ban is provided "as is," without any warranty, express or implied. Users utilize this software at their own risk. The developers and contributors to Fail2ban hold no responsibility for any damages, losses, or consequences resulting from the use of this software. Users are advised to carefully review and comply with licensing terms and any applicable regulations while using Fail2ban.