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IP forwarding for IPv4 must not be enabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-58445 AOSX-09-001205 SV-72875r1_rule Medium
Description
IP forwarding for IPv4 must not be enabled, as only authorized systems should be permitted to operate as routers.
STIG Date
Apple OS X 10.9 (Mavericks) Workstation Security Technical Implementation Guide 2015-02-26

Details

Check Text ( C-59275r1_chk )
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 (F-63763r1_fix)
To configure the system to disable IP forwarding, add the following line to /etc/sysctl.conf:

net.inet.ip.forwarding=0