![]() ![]() The registry key is located at: HKLMSOFTWAREMicrosoftWindows NTCurrentVersionWinlogon The name of the key is 'DefaultDomainName' Enter the name of your domain name inside this registry key and it will automatically select that when users try to login. By default, the Administrators and Remote Desktop Users groups are given remote logon rights. This is under Computer Configuration\Windows Settings\Security Settings\Local Policies\User Rights Assignment. When NLA is properly enabled, you will get the following error: rdesktop 10.0.1.73ĮRROR: CredSSP: Initialize failed, do you have correct kerberos tgt initialized ?įailed to connect, CredSSP required by server.įor long term solutions to this issue, organizations may wish to make this change part of a hardened standard image used to provision new servers. There is a registry edit that you can make on the Server your clients are RDP/RDC into. The Remote Logon is governed by the Allow Logon through Terminal Services group policy. One of the quickest and easiest ways to verify if NLA is to use the ‘rdesktop’ tool packaged with The registry key is located at: HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon The name of the key is 'DefaultDomainName' Enter the name of your domain name inside this registry key and it will automatically select that when users try to login instead of selecting the Local Machine name in the 'Log on to' field. Network Level Access should now be enabled. Doubleclick on “Require user authentication for remote connections by using Network Level Authentication”Ĭhanges are immediate, no reboot is required.Open the Group Policy Editor by typing ‘gpedit’. ![]() To enable network level access on Windows 2008 R2 we can do the following: Several risks are associated with this functionality an attacker is now able to: * Accurately fingerprint the version of Windows * Potentially identify user accounts on the system * Leverage the RDP service to consume excessive system resources The default configuration of RDP is similar to letting anyone into the lobby of your building while they may not have keys to apartments, we generally don’t want strangers milling around the lobby to gather information if it can be avoided. ![]() This allows an untrusted user to land on the system login page as shown below: The default configuration of Windows 7, 2008, and 2012 allows remote users to connect over the network and initiate a full RDP session without providing any credentials. Chances are you may have arrived here after a vulnerability scan returns a finding called “Terminal Services Doesn’t Use Network Level Authentication (NLA)”. ![]()
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