STIGQter: STIG Summary: SLES 12 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

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

DISA Rule

SV-237623r646832_rule

Vulnerability Number

V-237623

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

SLES-12-030365

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 default by running the following command as an administrator:

> sudo sysctl -w net.ipv6.conf.default.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.default.forwarding=0" >> /etc/sysctl.d/99-stig.conf'

> sudo sysctl --system

Check Contents

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

Check to see if IPv6 forwarding is disabled by default using the following command:

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

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

Vulnerability Number

V-237623

Documentable

False

Rule Version

SLES-12-030365

Severity Override Guidance

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

Check to see if IPv6 forwarding is disabled by default using the following command:

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

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

Check Content Reference

M

Target Key

4033

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