If you are a Windows user and have enabled remote connections to your computer, then you might want to use Fail2Ban4Win. It is a background service that monitors any “logon failed” attempts on your computer and bans the respective remote IP address ranges. This is done in an attempt to ban anyone who is trying to guess or brute-force password to your system by entering different passwords. The IP addresses are banned using the Windows Firewall. This is why it works only if you are not using any third-party firewall software.
Fail2Ban4Win comes in form of a ZIP archive. After extracting the ZIP contents the very first thing that you have to do is to edit the configuration.json file. In this file, you have to change isDryRun‘s value to false. Without doing this, it won’t be able to make any changes to the Windows Firewall. You can easily edit this file using a plain text editor such as Notepad++ or Microsoft Notepad.
You can now run Fail2Ban4Win by double-clicking on its EXE file which opens a console window in which we can see how it is reacting to the different login related events. But it is not practical to use Fail2Ban4Win in this manner on a regular basic. The second method to use Fail2Ban4Win is to install it as a background service on Windows. For installing it as a service, we have to right-click on Install service.ps1 file and choose Run as administrator or Run with PowerShell.
Fail2Ban4Win monitors many types of events on a Windows PC. The most common such event is known by its event ID 4625. This event is logged when logon attempt to the local system has failed from a remote computer. Other events monitored by Fail2Ban4Win included sshd and OpenSSH secure shell access to the system.
In conclusion, Fail2Ban4Win is a valuable tool for enhancing the security of your Windows system by actively monitoring and blocking unauthorized remote login attempts. By configuring the configuration.json file and installing it as a background service, you can ensure robust protection against potential threats. For anyone concerned with maintaining a secure remote connection environment, Fail2Ban4Win offers an effective solution that integrates seamlessly with Windows Firewall.
You can download Fail2Ban4Win from https://github.com/Aldaviva/Fail2Ban4Win.