The system must prevent local applications from generating source-routed packets.

From MAC OSX 10.6 Workstation Security Technical Implementation Guide

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-38202r1_rule The system must prevent local applications from generating source-routed packets.

Vulnerability discussion

Source-routed packets allow the source of the packet to suggest routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures.

Check content

Open a terminal session and enter the following command to view the value of "net.inet.ip.sourceroute". sysctl -a | grep net.inet.ip.sourceroute If the value of "net.inet.ip.sourceroute" is not set to "0", this is a finding.

Fix text

Open a terminal session and edit the /etc/sysctl.conf file and add the following line. net.inet.ip.sourceroute=0 NOTE: If the sysctl.conf file does not exist use the following command to create one. touch /etc/sysctl.conf

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