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The amount of idle time required before suspending a session must be properly set.


Overview

Finding ID Version Rule ID IA Controls Severity
V-1174 WN12-SO-000031 SV-52878r3_rule Low
Description
Open sessions can increase the avenues of attack on a system. This setting is used to control when a computer disconnects an inactive SMB session. If client activity resumes, the session is automatically reestablished. This protects critical and sensitive network data from exposure to unauthorized personnel with physical access to the computer.
STIG Date
Windows Server 2012 / 2012 R2 Domain Controller Security Technical Implementation Guide 2016-12-19

Details

Check Text ( C-47195r3_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SYSTEM\CurrentControlSet\Services\LanManServer\Parameters\

Value Name: autodisconnect

Value Type: REG_DWORD
Value: 0x0000000f (15) (or less)
Fix Text (F-45804r2_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft Network Server: Amount of idle time required before suspending session" to "15" minutes or less.