Terminal Services is not configured to limit users to one remote session (Terminal Server Role)

From Windows 2008 Domain Controller Security Technical Implementation Guide

Associated with: CCI-000054

SV-16938r1_rule Terminal Services is not configured to limit users to one remote session (Terminal Server Role)

Vulnerability discussion

This setting limits users to one remote session. It is possible, if this setting is disabled, for users to establish multiple sessions.

Check content

2008 - If the following registry value doesn’t exist or its value is not set to 1, then this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fSingleSessionPerUser Type: REG_DWORD Value: 1 Documentable Explanation: If the system has the role as a Terminal Server, or the site is using terminal services for remote administration this requirement needs to be documented with the IAO.

Fix text

2008 - Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services -> Terminal Server -> Connections “Restrict Terminal Server users to a Single Remote Session” to “Enabled”.

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