Group Policy best practices and settings for enhanced security
Written by PraveenaaGPO2 min read
Essential Group Policy settings to strengthen security
Prevent Windows from saving the LAN Manager hash
Restrict access to the command prompt
Control software installation permissions
Regulating access to the Control Panel
Disable access to removable media drives, DVDs, CDs, and floppy drives
Disable forced system restarts
Disable the guest user account
Set a lower maximum password age requirement
Block anonymous SID enumeration
Set a higher minimum password length requirement
How ADManager Plus manages and controls Group Policy modifications
Effective management of Group Policy Objects (GPOs) is essential for enhancing security within an organization. Implementing best practices for GPO management ensures that policies are enforced consistently, minimizing vulnerabilities and enhancing overall security. By following these recommendations, you can achieve a more secure, compliant, and efficiently managed IT environment.
Essential Group Policy settings to strengthen security
Here are the top 10 Group Policy settings for enhanced security:
Prevent Windows from saving the LAN manager hash
Restrict access to the command prompt
Control software installation permissions
Regulating access to the Control Panel
Disable access to removable media drives, DVDs, CDs, and floppy drives
Disable forced system restarts
Disable the guest user account
Block anonymous SID enumeration
Set a lower maximum password age requirement
Set a higher minimum password length requirement
Prevent Windows from saving the LAN Manager hash
To enhance security, it's important to prevent Windows from storing LAN Manager (LM) hashes of user passwords. The LM hash, an older hashing algorithm, is known to be weak and vulnerable to attacks, making it easier for hackers to exploit. By disabling the storage of LM hashes, you reduce the risk of password cracking and improve overall system security.
This process involves configuring system settings to ensure that Windows only stores the more secure Windows NT hashes. Taking this step helps safeguard user credentials and protects against potential unauthorized access. Follow the below steps to implement these restrictions.
Open the Group Policy Management Editor window.
Navigate to Computer Configuration > Windows Settings > Security Settings > Local
Policies > Security Options.
Double-click the Network security: Do not store LAN Manager hash value on next password change policy in the right pane.
Choose Enabled.
Click Apply and OK.
Restrict access to the command prompt
Command prompts can execute commands that provide elevated access and bypass system restrictions. To protect system resources, it's advisable to disable the command prompt.
Once disabled, if someone attempts to open a command window, the system will display a message indicating that certain settings are preventing this action. Follow the below steps to implement these restrictions.
Open the Group Policy Management Editor.
Navigate to User Configuration > Administrative Templates > System.
Double-click the Prevent access to the command prompt policy in the right pane.