The system must not process Internet Control Message Protocol [ICMP] timestamp requests.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-51321	OSX8-00-01220	SV-65531r1_rule		Medium

Description
The system must not process Internet Control Message Protocol [ICMP] timestamp requests.

STIG	Date
Apple OS X 10.8 (Mountain Lion) Workstation STIG	2015-02-10

Details

Check Text ( C-53669r1_chk )
To check if the system is configured to process ICMP timestamp requests, run the following command: sysctl net.inet.icmp.timestamp | awk '{ print $NF }' If the value is not set to "1", this is a finding.

Fix Text (F-56121r1_fix)
To disable ICMP timestamp responses, add the following line to /etc/sysctl.conf: net.inet.icmp.timestamp=1