The system must be configured with a default gateway for IPv6 if the system uses IPv6, unless the system is a router.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22490	GEN005570	SV-46111r1_rule		Medium

Description
If a system has no default gateway defined, the system is at increased risk of man-in-the-middle, monitoring, and Denial of Service attacks.

STIG	Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide	2018-09-19

Details

Check Text ( C-43368r1_chk )
Check for a default route for IPv6. If the system is a VM host and acts as a router solely for the benefit of its client systems, then this rule is not applicable. # ip -6 route list | grep default If the system uses IPv6, and no results are returned, this is a finding.

Fix Text (F-39452r1_fix)
Add a default route for IPv6. Edit /etc/sysconfig/network/routes Restart the interface. # ifdown eth0; ifup eth0