STIGQter: STIG Summary: Cisco NX-OS Switch NDM Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

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

DISA Rule

SV-220502r604141_rule

Vulnerability Number

V-220502

Group Title

SRG-APP-000395-NDM-000347

Rule Version

CISC-ND-001150

Severity

CAT II

CCI(s)

CCI-001967 - The information system authenticates 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

Fix Recommendation

Configure the Cisco switch to authenticate NTP sources using authentication that is cryptographically based as shown in the example below:

SW1(config)# ntp authenticate
SW1(config)# ntp authentication-key 1 md5 xxxxxxxxxxxxx
SW1(config)# ntp trusted-key 1
SW1(config)# ntp server 10.1.12.10 key 1
SW1(config)# ntp server 10.1.22.13 key 1
SW1(config)# ntp commit
SW1(config)# end

Check Contents

Review the Cisco switch configuration to verify that it is compliant with this requirement as shown in the configuration example below:

ntp distribute
ntp server 10.1.12.10 key 1
ntp server 10.1.22.13 key 1
ntp authenticate
ntp authentication-key 1 md5 xxxxxxxxxx 7
ntp trusted-key 1
ntp commit

If the Cisco switch is not configured to authenticate NTP sources using authentication that is cryptographically based, this is a finding.

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

DISA Rule

Vulnerability Number

Group Title

Rule Version

Severity

CCI(s)

Weight

Fix Recommendation

Check Contents

Vulnerability Number

Documentable

Rule Version

Severity Override Guidance

Check Content Reference

Target Key

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