Fail2ban is a program that will help you with the security of your system.

There is a tutorial for this at Linux Handbook, so I have quoted the description, or part of, below.

This is where a tool like Fail2Ban comes into picture. Fail2Ban is a free and open source software that helps in securing your Linux server against malicious logins. Fail2Ban will ban the IP (for a certain time) if there is a certain number of failed login attempts. [1]

Links

[1] Linux handbook : fail2ban

Chat

I am on the Devon and Cornwall Linux user group mailing list and also their matrix channel as zleap, it is better to ask there, that way others can answer too.

Tags

#Linux,#Bash,#ssh,#Security,#fail2ban

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