Install Fail2ban on Centos 7 to Protect SSH via firewalld
Install Fail2ban on Centos 7 to Protect SSH via firewalld Introduction If you are using password based authentication for SSH access to a server attached to the public internet, then this will look all too familiar. tutorial@<redacted>'s password: Last failed login: Mon Mar 20 20:47:43 UTC 2017 from 116.31.116.37 on ssh:notty There were 96619 failed login attempts since the last successful login. Last login: Mon Mar 13 18:07:23 2017 from <redacted> Did you notice the 96619 failed login attempts? The vast majority of those attempted connections are likely attempts to guess the credentials and gain access to your server! One way to minimize the chances of such brute-force attempts actually working is to utilize Fail2ban. Fail2ban can be configured to keep an eye on various system logs and respond to failed login attempts using local firewall rules. In this tutorial we will briefly show how to get Fail2ban installed and configured to protect ...