Enabling Fail2ban Linode protects the servers from automated attacks by continuously monitoring system logs. Let’s explore how to install fail2ban on various Linux distributions. Bobcares, as part of our Server Management service, handles all server issues, large or small.

Fail2ban On Linode

Fail2ban, A log-parsing program that checks system logs for signs of SSH brute force attacks on the Linode servers. We can receive email notifications from Fail2ban when an attack is taking place. Thus making it a primary choice for protection.

Installing Fail2ban On Linode

Installation of Fail2ban varies by OS. Before going with the installation process, ensure to run all the commands with root privileges. Now, We can see the steps our Support team suggests to install the fail2ban software in the below section.

CentOS/CentOS Stream/RHEL Based Operating Systems

1. Firstly, make sure the system is up to date. Then install the EPEL repository with the command:

   yum update -y && yum install epel-release -y

    
2. Now install Fail2Ban software using the command:

   yum install fail2ban

    
3. If we like email support, install Sendmail. This is optional.

   yum install sendmail

    
4. Lastly, start and enable Fail2ban. We can also do the same to enable Sendmail.

   systemctl start fail2ban
   systemctl enable fail2ban
   systemctl start sendmail
   systemctl enable sendmail

    

Debian Systems

1. Make sure your system is up to date using the command:

   apt-get update && apt-get upgrade -y

    
2. Now install Fail2ban:

   apt-get install fail2ban

    
3. To enable email support, install Sendmail. This is optional.

   apt-get install sendmail-bin sendmail

    

Fedora OS

1. Primarily, update the system:

   dnf update

    
2. Now install Fail2ban:

   dnf install fail2ban

    
3. (Optional) If we would like email support, then install Sendmail:

   dnf install sendmail

    
4. Finally, start and enable Fail2ban and, if needed, Sendmail:

   systemctl start fail2ban
   systemctl enable fail2ban
   systemctl start sendmail
   systemctl enable sendmail

    

Ubuntu Systems

1. First of all, make sure the system is up to date:

   apt-get update && apt-get upgrade -y

    
2. Then install Fail2ban:

   apt-get install fail2ban

    
3. (Optional) If we would like email support, install Sendmail:

   apt-get install sendmail

    
4. Lastly, allow SSH access through UFW and then enable the firewall:

   ufw allow ssh
   ufw enable

    

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Conclusion

To conclude, our Support team went over the Fail2ban installation process details.