The system must not accept source-routed IPv4 packets.

From Apple OS X 10.8 (Mountain Lion) Workstation STIG

Associated with: CCI-000366

SV-65521r1_rule The system must not accept source-routed IPv4 packets.

Vulnerability discussion

Check content

To check if the system is configured to accept source-routed packets, run the following command: sysctl net.inet.ip.accept_sourceroute | awk '{ print $NF }' If the value is not "0", this is a finding.

Fix text

To configure the system to not accept source-routed packets, add the following line to /etc/sysctl.conf: net.inet.ip.accept_sourceroute=0

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