HOW TO INSTALL AND SET UP FAIL2BAN ON CENTOS SERVER
Fail2ban software is an intrusion prevention framework on your CentOS 7 (and 6) VPS that scans log files and bans IPs that show the malicious signs so you can protect your server from brute-force attacks. Some previously posted some including changing the default SSH port and disabling root login directly will help you to secure your server, and Fail2ban is one more step in that direction. A brute-force attack may occur continuously, Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time. Fail2Ban is able to reduce the rate of incorrect authentication attempts because Fail2Ban comes with filters for various services (apache, courier, ssh, etc)...
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