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V-22490

CAT II (Medium)

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

Rule ID

SV-46111r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-000366

Discussion

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.

Check Content

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

Add a default route for IPv6.
Edit /etc/sysconfig/network/routes
Restart the interface.
# ifdown eth0; ifup eth0