Fail2ban is a popular intrusion prevention tool for Linux systems. It helps to protect against brute-force attacks by monitoring log files and blocking IP addresses that exhibit malicious behavior. Here are the steps to install and configure Fail2ban on a Linux system:
Step 1: Install Fail2ban
sudo apt-get update sudo apt-get install fail2ban
Step 2: Configure Fail2ban
sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local sudo nano /etc/fail2ban/jail.local
In the jail.local file, you can configure various parameters such as the log file to monitor, the banned IP address time, etc. Save and close the file after making the necessary changes.
Step 3: Start and Enable Fail2ban Service
sudo systemctl start fail2ban sudo systemctl enable fail2ban
Step 4: Check the Status of Fail2ban
sudo fail2ban-client status
You should see the status of all the enabled Fail2ban jails, and the number of banned IP addresses if any.
That's it! You have successfully installed and configured Fail2ban on your Linux system. It will now help to prevent malicious attacks and keep your system secure.