STIGQter STIGQter: STIG Summary: Microsoft Exchange 2016 Edge Transport Server Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 22 Jan 2021:

Exchange Receive connector Maximum Hop Count must be 60.

DISA Rule

SV-221226r612603_rule

Vulnerability Number

V-221226

Group Title

SRG-APP-000247

Rule Version

EX16-ED-000270

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Update the EDSP to reflect the value for Receive connectors.

Open the Exchange Management Shell and enter the following command:

Set-ReceiveConnector -Identity <'IdentityName'> -MaxHopCount 60

Note: The <IdentityName> value must be in single quotes.

or

The value as identified by the EDSP that has obtained a signoff with risk acceptance.

Repeat the procedure for each receive connector.

Check Contents

Review the Email Domain Security Plan (EDSP).

Determine the value for Receive connectors.

Open the Exchange Management Shell and enter the following command:

Get-ReceiveConnector | Select Name, Identity, MaxHopCount

For each receive connector, if the value of "MaxHopCount" is not set to "60", this is a finding.

or

If the value of "MaxHopCount" is set to a value other than "60" and has signoff and risk acceptance, this is not a finding.

Vulnerability Number

V-221226

Documentable

False

Rule Version

EX16-ED-000270

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

Determine the value for Receive connectors.

Open the Exchange Management Shell and enter the following command:

Get-ReceiveConnector | Select Name, Identity, MaxHopCount

For each receive connector, if the value of "MaxHopCount" is not set to "60", this is a finding.

or

If the value of "MaxHopCount" is set to a value other than "60" and has signoff and risk acceptance, this is not a finding.

Check Content Reference

M

Target Key

4079

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