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Tag: Brute Force

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What Is Fail2Ban?

Fail2ban is an open-source software that actively scans the servers log files in real-time for any brute force login attempts, and if found, summarily blocks the attack using the servers firewall software (firewalld or iptables). Fail2Ban runs as a background process and continuously scans the log files for unusual login patterns and security breach attempts.

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Have you ever logged into your server and seen a message like this?

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One of the simplest goals of server security is keeping administrator credentials private. There is no better way to achieve this than through strict firewall rules that only allows specific IPs to authenticate. However, there are some situations where it is necessary to open a login prompt to the broader Internet. In this case, the only thing barring anonymous internet users from unauthorized access is your password. The stronger your password, the better off you are, but even the most cryptic passwords can be guessed given enough tries.

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