STIGQter: STIG Summary: VMware vSphere 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 30 Jan 2025:

The Photon operating system must not perform multicast packet forwarding.

DISA Rule

SV-256574r991589_rule

Vulnerability Number

V-256574

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

PHTN-30-000105

Severity

CAT II

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

At the command line, run the following command:

# for SETTING in $(/sbin/sysctl -aN --pattern "net.ipv[4|6].conf.(all|default|eth.*).mc_forwarding"); do sed -i -e "/^${SETTING}/d" /etc/sysctl.conf;echo $SETTING=0>>/etc/sysctl.conf; done
# /sbin/sysctl --load

Check Contents

At the command line, run the following command:

# /sbin/sysctl -a --pattern "net.ipv[4|6].conf.(all|default|eth.*).mc_forwarding"

Expected result:

net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.eth0.mc_forwarding = 0
net.ipv6.conf.all.mc_forwarding = 0
net.ipv6.conf.default.mc_forwarding = 0
net.ipv6.conf.eth0.mc_forwarding = 0

If the output does not match the expected result, this is a finding.

Note: The number of "ethx" lines returned is dependent on the number of interfaces. Every "ethx" entry must be set to "0".

Vulnerability Number

V-256574

Documentable

False

Rule Version

PHTN-30-000105

Severity Override Guidance

Check Content Reference

Target Key

5520