Finding ID | Version | Rule ID | IA Controls | Severity |
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V-65681 | WN10-CC-000206 | SV-80171r1_rule | Low |
Description |
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Windows 10 allows Windows Update to obtain updates from additional sources instead of Microsoft. In addition to Microsoft, updates can be obtained from and sent to "PCs on my local network" or "PCs on my local network, and PCs on the Internet". This is part of the Windows Update trusted process, however to minimize outside exposure, obtaining updates from (or sending to) systems on the Internet must be prevented. |
STIG | Date |
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Windows 10 Security Technical Implementation Guide | 2016-11-03 |
Check Text ( C-66255r1_chk ) |
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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: \SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization\ Value Name: DODownloadMode Value Type: REG_DWORD Value: 0 (Disabled), 1 (Peers on same NAT only) or 2 (Local Network / Private Peering) A value of 3 (Internet Peering) would be a finding. |
Fix Text (F-71641r1_fix) |
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Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Delivery Optimization >> "Download Mode" to "Enabled" with any option except "Internet" selected. Available options include: None, 0 = Disabled LAN, 1 = Peers on same NAT only |