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ConfigProof

All controls

SW-SEC-005MediumCisco Catalyst and NexusCIS 2.3.2

No NTP server

At a glance

Base severity

Medium

Area

Logging and Integrations

Platform

Cisco Catalyst and Nexus

Evidence level

Fact1.00

Benchmark reference

CIS 2.3.2

Reads the export, not the device

ConfigProof reads a configuration export. This control is evaluated against the objects in that file, and it reports what the file says. It does not connect to the device and sees no traffic, so a finding here describes the configuration, not what the firewall is doing right now.

Why it matters

Log timestamps cannot be correlated with other devices, which slows down every investigation.

How to fix it

Web interface

The steps below are written for the web interface. A finding raised on your own export carries the same steps with your object names filled in.

  1. Configure ntp server <server> (two or more), ideally with NTP authentication.

Command line

Cisco IOS-XE CLI

configure terminalntp server <ntp-server>endwrite memory

An example. Values in angle brackets are yours to supply; a finding on your own export fills in the names it read. Typed in configuration mode; copy running-config startup-config saves it, with no separate commit. Read every line first.

Read it back

show ntp associations
Values to fill in1
<ntp-server>
The NTP server address
Before you type it2
  • Written from the Cisco IOS-XE 17 and NX-OS 9 and 10 command references and not run on a device: read each line before you paste it.
  • On a Nexus (NX-OS) switch the same change is typed with NX-OS syntax; check the NX-OS configuration guide for the equivalent command.

How to confirm the fix

  • show ntp associations lists the servers.

Limits

  • No limitation is recorded for this control beyond the one that applies to all of them: it reads a configuration export.

Compliance references

2.3.2

CIS Cisco IOS 17.x Benchmark v2.0.0

Covers the whole recommendation

Where a control aligns with a recommendation of the CIS Cisco IOS 17.x Benchmark v2.0.0, that recommendation is cited as a reference. Only that version was checked. A reference is not a certification.

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