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CCE
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CCE-46027-9

Platform: win2016Date: (C)2017-08-03   (M)2017-10-16



"Microsoft network server: Amount of idle time required before suspending session" This policy setting allows you to specify the amount of continuous idle time that must pass in an SMB session before the session is suspended because of inactivity. Administrators can use this policy setting to control when a computer suspends an inactive SMB session. If client activity resumes, the session is automatically reestablished. A value of 0 will disconnect an idle session as quickly as possible. The maximum value is 99999, which is 208 days; in effect, this value disables the setting. Vulnerability: Each SMB session consumes server resources, and numerous null sessions will slow the server or possibly cause it to fail. An attacker could repeatedly establish SMB sessions until the server's SMB services become slow or unresponsive. Counter Measure: Configure the Microsoft network server: Amount of idle time required before disconnecting session setting to 15 minutes. Potential Impact: There will be little impact because SMB sessions will be re-established automatically if the client resumes activity.


Parameter: autodisconnect


Technical Mechanism: Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options (2) REG: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters!autodisconnect

References:

Resource IdReference
SCAP Repo OVAL Definitionoval:org.secpod.oval:def:40220


OVAL    1
oval:org.secpod.oval:def:40220
XCCDF    3
xccdf_org.secpod_benchmark_general_Windows_Server_2016
xccdf_org.secpod_benchmark_NIST_800_171_R1_Windows_Server_2016
xccdf_org.secpod_benchmark_PCI_3_2_Windows_Server_2016

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