Amount of idle time required before suspending a session is improperly set.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1174	4.028	SV-25057r1_rule	ECSC-1	Low

Description
Administrators should use this setting to control when a computer disconnects an inactive SMB session. If client activity resumes, the session is automatically re-established. This protects critical and sensitive network data from exposure to unauthorized personnel with physical access to the computer.

STIG	Date
Windows 7 Security Technical Implementation Guide	2014-04-02

Details

Check Text ( C-427r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for “Microsoft Network Server: Amount of idle time required before suspending a session” is not set to ”15" minutes or less, then this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\LanManServer\Parameters\ Value Name: AutoDisconnect Value Type: REG_DWORD Value: 15

Check Text ( C-427r1_chk )

Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view.

Navigate to Local Policies -> Security Options.

If the value for “Microsoft Network Server: Amount of idle time required before suspending a session” is not set to ”15" minutes or less, then this is a finding.

The policy referenced configures the following registry value:

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

Value Name: AutoDisconnect

Value Type: REG_DWORD
Value: 15

Fix Text (F-5774r1_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 a session” to ”15” minutes or less.