How To Protect SSH with Fail2Ban on Ubuntu 14.04

How To Protect SSH with Fail2Ban on Ubuntu 14.04

How To Protect SSH with Fail2Ban on Ubuntu 14.04

If you run a server that allows remote SSH access, it's important to protect it from brute force attacks. One way to do this is by using Fail2Ban, a popular tool for blocking malicious traffic.

Step 1: Install Fail2Ban

Open a terminal window and enter the following command:

sudo apt-get install fail2ban

Step 2: Configure Fail2Ban

Next, create a new configuration file for Fail2Ban:

sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local

Then open the new file:

sudo nano /etc/fail2ban/jail.local

Find the section that starts with "[sshd]" and make sure the following settings are configured:

[sshd] enabled = true port = ssh filter = sshd logpath = /var/log/auth.log maxretry = 3

Save and close the file.

Step 3: Restart Fail2Ban

After making changes to the configuration file, you need to restart Fail2Ban:

sudo service fail2ban restart

Step 4: Test Fail2Ban

To test Fail2Ban, try logging into your server with incorrect credentials several times. After a few attempts, Fail2Ban should block your IP address.

Conclusion

By following these steps, you can protect your SSH server from brute force attacks using Fail2Ban on Ubuntu 14.04.

Keywords: SSH, Fail2Ban, Ubuntu, security, remote access, brute force attacks, configuration, log files, IP address.

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