STIGQter: STIG Summary: SUSE Linux Enterprise Server 15 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 23 Apr 2021:

The SUSE operating system must not be performing Internet Protocol version 6 (IPv6) packet forwarding unless the system is a router.

DISA Rule

SV-235025r622137_rule

Vulnerability Number

V-235025

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

SLES-15-040381

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Configure the SUSE operating system to not performing IPv6 packet forwarding by running the following command as an administrator:

> sudo sysctl -w net.ipv6.conf.all.forwarding=0

If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf":

> sudo sh -c 'echo "net.ipv6.conf.all.forwarding=0" >> /etc/sysctl.d/99-stig.conf'

> sudo sysctl --system

Check Contents

Verify the SUSE operating system is not performing IPv6 packet forwarding, unless the system is a router.

Check to see if IPv6 forwarding is enabled using the following command:

> sudo sysctl net.ipv6.conf.all.forwarding
net.ipv6.conf.all.forwarding = 0

If the network parameter "ipv6.conf.all.forwarding" is not equal to "0" or nothing is returned, this is a finding.

Vulnerability Number

V-235025

Documentable

False

Rule Version

SLES-15-040381

Severity Override Guidance

Verify the SUSE operating system is not performing IPv6 packet forwarding, unless the system is a router.

Check to see if IPv6 forwarding is enabled using the following command:

> sudo sysctl net.ipv6.conf.all.forwarding
net.ipv6.conf.all.forwarding = 0

If the network parameter "ipv6.conf.all.forwarding" is not equal to "0" or nothing is returned, this is a finding.

Check Content Reference

M

Target Key

5274

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