IP forwarding for IPv4 must not be enabled.

From Apple OS X 10.9 (Mavericks) Workstation Security Technical Implementation Guide

Associated with: CCI-000366

SV-72875r1_rule IP forwarding for IPv4 must not be enabled.

Vulnerability discussion

IP forwarding for IPv4 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.inet.ip.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: net.inet.ip.forwarding=0

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