STIGQter: STIG Summary: Ivanti Connect Secure NDM Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 01 Oct 2025:

The ICS must be configured to authenticate Network Time Protocol (NTP) sources using authentication that is cryptographically based.

DISA Rule

SV-258603r961506_rule

Vulnerability Number

V-258603

Group Title

SRG-APP-000395-NDM-000347

Rule Version

IVCS-NM-000100

Severity

CAT II

CCI(s)

• CCI-001967 - Authenticate organization-defined devices and/or types of devices before establishing a local, remote, and/or network connection using bidirectional authentication that is cryptographically based.

Weight

10

Fix Recommendation

In the ICS Web UI, navigate to System >> Status >> Dashboard.
1. Click the "Overview" tab.
2. Under "Appliance Details" and "System Date and Time" select "Edit".
3. Select the Time Zone to use - DOD may require GMT.
4. Select "Use Pool of NTP servers".
5. Enter the IP/hostname of each NTP server in the "NTP Server 1", "NTP Server 2", etc.
6. Under the key section input the key in the following format: <keynumber> <algorithm> <key>
For example, it would be entered like this: 1 SHA1 NtPKey123.
Note: there must be a space between each section of <keynumber> <algorithm> <key>
7. Click "Save Changes".
8. Navigate to System >> Log/Monitoring >> Events.
9. Ensure an event log stating the time sync is successful.

Check Contents

In the ICS Web UI, navigate to System >> Status >> Dashboard.
1. Click the "Overview" tab.
2. Under "Appliance Details" and "System Date and Time", select "Edit".
3. Verify the "Use Pool of NTP servers" is checked with NTP server IPs defined.
4. Verify the NTP server IP/hostname is defined with a key.

If the ICS does not authenticate NTP sources using authentication that is cryptographically based, this is a finding.

Vulnerability Number

V-258603

Documentable

False

Rule Version

IVCS-NM-000100

Severity Override Guidance

In the ICS Web UI, navigate to System >> Status >> Dashboard.
1. Click the "Overview" tab.
2. Under "Appliance Details" and "System Date and Time", select "Edit".
3. Verify the "Use Pool of NTP servers" is checked with NTP server IPs defined.
4. Verify the NTP server IP/hostname is defined with a key.

If the ICS does not authenticate NTP sources using authentication that is cryptographically based, this is a finding.

Check Content Reference

M

Target Key

5558