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The system must not process Internet Control Message Protocol (ICMP) timestamp requests.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22409 GEN003602 M6 SV-38200r1_rule ECSC-1 Low
Description
The processing of ICMP timestamp requests increases the attack surface of the system.
STIG Date
MAC OSX 10.6 Workstation Security Technical Implementation Guide Draft 2013-01-10

Details

Check Text ( C-37657r1_chk )
Open a terminal session and enter the following command to view the timestamp.

sysctl -a | grep net.inet.icmp.timestamp

If the value of net.inet.icmp.timestamp is not set to "1", this is a finding.
Fix Text (F-32898r1_fix)
Open a terminal session and edit the /etc/sysctl.conf file and add the following line.

net.inet.icmp.timestamp=1

NOTE: If the sysctl.conf file does not exist use the following command to create one.
touch /etc/sysctl.conf