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

The SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide (V1 R12) has 550 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R12

CurrentPublished Fri Oct 26 2018

The IPv6 protocol handler must not be bound to the network stack unless needed.

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

Assessment Title

Rule Text

The IPv6 protocol handler must not be bound to the network stack unless needed.

Description

Discussion Text

IPv6 is the next version of the Internet protocol. Binding this protocol to the network stack increases the attack surface of the host.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-22541

Rule

SV-45980r1_rule

Severity

medium

Rule Version

GEN007700

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Use the ifconfig command to determine if any network interface has an IPv6 address bound to it:
# /sbin/ifconfig | grep inet6

If any lines are returned that indicate IPv6 is active and the system does not need IPv6, this is a finding.

Implementation Procedure

Fix Text

Remove the capability to use IPv6 protocol handler.

Procedure:
Update the variable "IPV6_DISABLE" using YaST in the /etc/sysconfig editor under the ‘System’ > ‘Kernel’ tree.  Setting this variable to "YES" deactivates IPv6 at boot time.  Reboot the system to implement the change.

NOTE: This change may affect other software product(s) that have their own IPv6 configuration settings.

STIG check 264 of 550 in the SUSE Linux Enterprise Server v11 for System z STIG checklist

← Previous · V-22539The Bluetooth protocol handler must be disabled or not installed.Next · V-22542 →The IPv6 protocol handler must be prevented from dynamic loading unless needed.