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Removed

V-223344

The SIP security mode in Lync must be enabled.

Finding ID
O365-LY-000001
Rule ID
SV-223344r508019_rule
Severity
Cat II
CCE
(None)
Group Title
SRG-APP-000219
CCI
CCI-001184
Target Key
(None)
Documentable
No
Discussion

When Lync connects to the server, it supports various authentication mechanisms. This policy allows the user to specify whether Digest and Basic authentication are supported. Disabled (default): NTLM/Kerberos/TLS-DSK/Digest/Basic Enabled: Authentication mechanisms: NTLM/Kerberos/TLS-DSK Gal Download: Requires HTTPS if user is not logged in as an internal user.

Fix Text

Set the policy value for Computer Configuration >> Administrative Templates >> Skype for Business 2016 >> Microsoft Lync Feature Policies "Configure SIP security mode" to "Enabled".

Check Content

Verify the policy value for Computer Configuration >> Administrative Templates >> Skype for Business 2016 >> Microsoft Lync Feature Policies "Configure SIP security mode" is set to "Enabled". Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\office\16.0\lync If the value enablesiphighsecuritymode is REG_DWORD = 1, this is not a finding.