The system must use an appropriate reverse-path filter for IPv6 network traffic, if the system uses IPv6.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22552	GEN007900	SV-26227r1_rule	ECSC-1	Medium

Description
Reverse-path filtering provides protection against spoofed source addresses by causing the system to discard packets with source addresses for which the system has no route or if the route does not point towards the interface on which the packet arrived. Depending on the role of the system, reverse-path filtering may cause legitimate traffic to be discarded and, therefore, should be used with a more permissive mode or filter, or not at all. Whenever possible, reverse-path filtering should be used.

Description

Reverse-path filtering provides protection against spoofed source addresses by causing the system to discard packets with source addresses for which the system has no route or if the route does not point towards the interface on which the packet arrived. Depending on the role of the system, reverse-path filtering may cause legitimate traffic to be discarded and, therefore, should be used with a more permissive mode or filter, or not at all. Whenever possible, reverse-path filtering should be used.

STIG	Date
UNIX SRG	2013-03-26

Details

Check Text ( C-29310r4_chk )
Determine if the system uses a reverse-path filter for IPv6 network traffic. If it does not, this is a finding.

Fix Text (F-26342r3_fix)
Configure the system to use a reverse-path filter for IPv6 network traffic.