STIGQter: STIG Summary: MS Exchange 2013 Edge Transport Server Security Technical Implementation Guide Version: 1 Release: 5 Benchmark Date: 26 Apr 2019:

Exchange Receive connector Maximum Hop Count must be 60.

DISA Rule

SV-84457r1_rule

Vulnerability Number

V-69835

Group Title

SRG-APP-000247

Rule Version

EX13-EG-000135

Severity

CAT II

CCI(s)

• CCI-001095 - The information system manages excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial of service attacks.

Weight

10

Fix Recommendation

Update the EDSP.

Open the Exchange Management Shell and enter the following command:

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

Note: The <IdentityName> value must be in 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-69835

Documentable

False

Rule Version

EX13-EG-000135

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

3099

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