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XCCDF
Microsoft Exchange 2013 Client Access Server Security Technical Implementation Guide
SRG-APP-000391
Exchange Outlook Anywhere (OA) clients must use NTLM authentication to access email.
Exchange Outlook Anywhere (OA) clients must use NTLM authentication to access email.
An XCCDF Rule
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Exchange Outlook Anywhere (OA) clients must use NTLM authentication to access email.
Medium Severity
<VulnDiscussion>Identification and authentication provide the foundation for access control. Access to email services applications requires NTLM authentication. Outlook Anywhere, if authorized for use by the site, must use NTLM authentication when accessing email. Note: There is a technical restriction in Exchange OA that requires a direct SSL connection from Outlook to the CA server. There is also a constraint where Microsoft supports that the CA server must participate in the AD domain inside the enclave. For this reason, Outlook Anywhere must be deployed only for enclave-sourced Outlook users.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>