From HP FlexFabric Switch NDM Security Technical Implementation Guide
Part of SRG-APP-000371-NDM-000296
Associated with: CCI-001891
Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside of the configured acceptable allowance (drift) may be inaccurate. Additionally, unnecessary synchronization may have an adverse impact on system performance and may indicate malicious activity. Synchronizing internal information system clocks provides uniformity of time stamps for information systems with multiple system clocks and systems connected over a network.
Check the HP FlexFabric Switch configuration to determine if compares internal information system clocks at least every 24 hours with an authoritative time server. [HP] display ntp status Clock status: synchronized Clock stratum: 4 System peer: 16.110.135.123 Local mode: client Reference clock ID: 16.110.135.123 Leap indicator: 00 Clock jitter: 0.004227 s Stability: 0.000 pps Clock precision: 2^-19 Root delay: 96.75598 ms Root dispersion: 149.76501 ms Reference time: d916fabd.a5c6d326 Mon, Jun 1 2015 9:37:33.647 If this comparison does not occur at least every 24 hours, this is a finding.
Configure the HP FlexFabric Switch to compare internal information system clocks at least every 24 hours with an authoritative time server. [HP] ntp enable [HP] ntp unicast-server 16.110.135.123
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