The application firewall must be enabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-58425	AOSX-09-001080	SV-72855r1_rule		Medium

Description
The Application Firewall is the built in firewall that comes with Mac OS X and must be enabled. Firewalls protect computers from network attacks by blocking or limiting access to open network ports. Application firewalls limit which applications are allowed to communicate over the network.

STIG	Date
Apple OS X 10.9 (Mavericks) Workstation Security Technical Implementation Guide	2017-01-05

Details

Check Text ( C-59251r2_chk )
If an approved HBSS solution is installed per AOSX-09-000835, this is not applicable. To check if the OS X firewall has been enabled, run the following command: sudo /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate If the result is 'disabled', this is a finding.

Fix Text (F-63739r1_fix)
To enable the firewall run the following command: sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate on