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EDGE-00-000062 The built-in DNS client must be disabled.

DISA STIG library V2R5
All changes in this version
first version loaded CAT II

Maps to IA-2(8), IA-2(9) via CCI-001941, CCI-001942

Title

The built-in DNS client must be disabled.

Control

The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Use built-in DNS client" must be set to "disabled". Use the Windows Registry Editor to navigate to the following key: HKLM\SOFTWARE\Policies\Microsoft\Edge If the value for "BuiltInDnsClientEnabled" is not set to "REG_DWORD = 0", this is a finding.

Discussion

This setting controls whether to use the built-in DNS client. This does not affect which DNS servers are used; it only controls the software stack that is used to communicate with them. For example, if the operating system is configured to use an enterprise DNS server, that same server would be used by the built-in DNS client. However, it is however possible that the built-in DNS client will address servers in different ways by using more modern DNS-related protocols such as DNS-over-TLS. If this policy is enabled, the built-in DNS client is used if it is available. If this policy is disabled, the client is never used.

Related controls

CCI-001941, CCI-001942

Fix

Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Use built-in DNS client" to "disabled".