1.119 SOL-11.1-050020

Information

The system must not respond to ICMP timestamp requests.

GROUP ID: V-216369
RULE ID: SV-216369r959010

By accurately determining the system's clock state, an attacker can more effectively attack certain time-based pseudorandom number generators (PRNGs) and the authentication systems that rely on them.

Solution

The Network Management profile is required.

Disable source respond to timestamp.

# pfexec ipadm set-prop -p _respond_to_timestamp=0 ip

See Also

https://workbench.cisecurity.org/benchmarks/23765