STIGQter: STIG Summary: Microsoft Exchange 2016 Mailbox Server Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

Exchange must use encryption for Outlook Web App (OWA) access.

DISA Rule

SV-228416r684257_rule

Vulnerability Number

V-228416

Group Title

SRG-APP-000014

Rule Version

EX16-MB-002910

Severity

CAT II

CCI(s)

• CCI-000068 - The information system implements cryptographic mechanisms to protect the confidentiality of remote access sessions.

Weight

10

Fix Recommendation

Configure the OWA site to require SSL port 443.

Check Contents

Open a Exchange Management Shell and enter the following command:

Get-OwaVirtualDirectory | select internalurl, externalurl

If the value returned is not https://, this is a finding.

Vulnerability Number

V-228416

Documentable

False

Rule Version

EX16-MB-002910

Severity Override Guidance

Open a Exchange Management Shell and enter the following command:

Get-OwaVirtualDirectory | select internalurl, externalurl

If the value returned is not https://, this is a finding.

Check Content Reference

M

Target Key

4223

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