The macOS system must not have IP forwarding for IPv6 enabled.

From Apple OS X 10.13 Security Technical Implementation Guide

Part of SRG-OS-000480-GPOS-00227

Associated with: CCI-000366

SV-96417r1_rule The macOS system must not have IP forwarding for IPv6 enabled.

Vulnerability discussion

IP forwarding for IPv6 must not be enabled, as only authorized systems should be permitted to operate as routers.

Check content

To check if "IP forwarding" is enabled, run the following command: sysctl net.inet6.ip6.forwarding If the values are not "0", this is a finding.

Fix text

To configure the system to disable "IP forwarding", add the following line to "/etc/sysctl.conf", creating the file if necessary: net.inet6.ip6.forwarding=0

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