The system must not respond to ICMP timestamp requests sent to a broadcast address.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22411	GEN003604	SV-26074r1_rule	ECSC-1	Medium

Description
The processing of Internet Control Message Protocol (ICMP) timestamp requests increases the attack surface of the system. Responding to broadcast ICMP timestamp requests facilitates network mapping and provides a vector for amplification attacks.

STIG	Date
UNIX SRG	2013-03-26

Details

Check Text ( C-29249r1_chk )
Determine if the system is configured to respond to ICMP Timestamp requests sent to broadcast addresses. If so, this is a finding.

Fix Text (F-26268r1_fix)
Configure the system to ignore ICMP Timestamp requests sent to broadcast addresses.