Linux - Security - Enforce Number of SSH Login Attempts

Introduction to the Bash-Based Linux - Security - Enforce Number of SSH Login Attempts Worklet

The Enforce Number of SSH Login Attempts Worklet is a bash-based script designed to enhance the security of Linux systems by regulating the number of authentication attempts allowed during an SSH login process. 

Controlling the maximum number of failed login attempts serves as a crucial defense against brute force attacks, where attackers systematically try various combinations of usernames and passwords to gain unauthorized access to a remote server.

Why would you use the Enforce Number of SSH Login Attempts Worklet?

Linux server administrators should consider using this Worklet because it provides an additional layer of security for their systems. By limiting failed login attempts, system administrators can effectively mitigate risks associated with brute force attacks. 

Implementing this Worklet also ensures compliance with best practices in securing SSH connections to protect sensitive information and user accounts on the server.

Components of the Linux - Security - Enforce Number of SSH Login Attempts Worklet

The main components in this Worklet include checks for active SSH service, retrieval of current MaxAuthTries value, setting a desired value for MaxAuthTries, and restarting the SSH service if needed. 

By default, this Worklet enforces '4' as the desired number for maximum authentication attempts permitted before terminating an incoming connection.

How does the Linux - Security - Enforce Number of SSH Login Attempts Worklet work?

This Worklet operates by first checking if the SSH service is running on the targeted system. If active, it retrieves and evaluates the current MaxAuthTries value against a preset desired value (Worklet preset value is defaulted at 4). If these values do not match or cannot be determined, remediation will be scheduled to adjust settings in the configuration file. 

The updated configuration file will then trigger a restart of the active SSH service or leave it inactive if not initially running.

What is the expected outcome when you use the Linux - Security - Enforce Number of SSH Login Attempts Worklet?

Upon successful implementation, the Worklet will enforce the desired number of maximum authentication attempts allowed before terminating an incoming connection. 

This not only fortifies your Linux system against brute force attacks but also maintains optimal security settings for your SSH service. As a result, this Worklet reduces potential unauthorized access attempts and ensures overall system integrity.