Yosemite Firewall script not working

[zmbarker]

JSS is 9.6

I have been using the JAMF provided firewall script to enable firewall. https://jamfnation.jamfsoftware.com/viewProductFile.html?id=135&fid=457

However, the script does not work for the 10.10.x computers.
How do others enable firewall?
Any thoughts?

[alexjdale]

Not sure why their script is so complicated.

defaults write /Library/Preferences/com.apple.alf globalstate -int 1

[jonnydford]

Yup, use the same as @alexjdale. Changing state to 2 will be more restrictive too if necessary

[dieter_lohuis]

The script does not work on 10.10 because the equation for the OS version does not work in the script:

OS=/usr/bin/defaults read /System/Library/CoreServices/SystemVersion ProductVersion | awk '{print substr($1,1,4)}'

if [[ "$OS" == "10.4" ]] then ....
if [[ "$OS" > "10.4" ]] then

OS X 10.10 will return '10.1' as a return value. Nothing will happen because its not equal to 10.4 and not bigger then 10.4.

Changing the number 4 in {print substr($1,1,4)} to a higher number does not help either because 10.10 or 10.10.1 is smaller then 10.4.

If you are not using an 10.4 or earlier you can remove the complete if statement for the '=="10.4" and remove the if from the ">"10.4" so it will not look at the version anymore. The script would then look like:

#!/bin/sh ####################################################################################################
# # Copyright (c) 2010, JAMF Software, LLC. All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # * Neither the name of the JAMF Software, LLC nor the # names of its contributors may be used to endorse or promote products # derived from this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY JAMF SOFTWARE, LLC "AS IS" AND ANY # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE # DISCLAIMED. IN NO EVENT SHALL JAMF SOFTWARE, LLC BE LIABLE FOR ANY # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # ####################################################################################################
# # SUPPORT FOR THIS PROGRAM # # This program is distributed "as is" by JAMF Software, LLC's Resource Kit team. For more # information or support for the Resource Kit, please utilize the following resources: # # http://list.jamfsoftware.com/mailman/listinfo/resourcekit # # http://www.jamfsoftware.com/support/resource-kit # # Please reference our SLA for information regarding support of this application: # # http://www.jamfsoftware.com/support/resource-kit-sla # ####################################################################################################
# # ABOUT THIS PROGRAM # # NAME # enableFilewall.sh -- Enables or Disables the firewall on Mac OS X Clients. # # SYNOPSIS # sudo enableFirewall.sh # sudo enableFirewall.sh <mountPoint> <computerName> <currentUsername> <enableFirewall> # # If there is a hardcoded value specified for <enableFirewall> in the script, # or if the parameter is not passed by The Casper Suite, the hardcoded value in the script will # be used. # # The data that is specified for the <enableFirewall> parameter should be specified in one of # the following formats: # # "TRUE" # "FALSE" # "YES" # "NO" # # DESCRIPTION # This script enables or disables the firewall on Mac OS X 10.5 or later. # It can be used with a hardcoded value in the script, or read in as a parameter. # Since the Casper Suite defines the first three parameters as (1) Mount Point, (2) Computer # Name and (3) username, we are using the fourth parameter ($4) as the passable parameter to # acquire the status of <enableFirewall>. In addition, the fourth parameter is utilized to set # the enableFirewall parameter. # ####################################################################################################
# # HISTORY # # Version: 1.1 # # - Created by Nick Amundsen on August 6th, 2008 # - Updated by Nick Amundsen on January 21, 2010 # # Version: 1.2 # # - Modified by Felix Danckwerts on October 24th, 2012 # - disable error output # ####################################################################################################
# # DEFINE VARIABLES & READ IN PARAMETERS # ####################################################################################################

# HARDCODED VALUE FOR "enableFirewall" IS SET HERE enableFirewall=""

# CHECK TO SEE IF A VALUE WAS PASSED IN PARAMETER 4 AND, IF SO, ASSIGN TO "enableFirewall" if [ "$4" != "" ] && [ "$enableFirewall" == "" ]; then enableFirewall=$4 fi

####################################################################################################
# # SCRIPT CONTENTS - DO NOT MODIFY BELOW THIS LINE # ####################################################################################################

if [ "$enableFirewall" == "" ]; then echo "Error: The parameter 'enableFirewall' is blank. Please specify a value." exit 1 fi

OS=/usr/bin/defaults read /System/Library/CoreServices/SystemVersion ProductVersion | awk '{print substr($1,1,10)}'

case $enableFirewall in "true" | "TRUE" | "yes" | "YES") echo "Enabling Firewall for OS $OS ..." /usr/bin/defaults write /Library/Preferences/com.apple.alf globalstate -int 1 2> /dev/null /bin/launchctl unload /System/Library/LaunchDaemons/com.apple.alf.agent.plist 2> /dev/null /bin/launchctl unload /System/Library/LaunchAgents/com.apple.alf.useragent.plist 2> /dev/null /bin/launchctl load /System/Library/LaunchDaemons/com.apple.alf.agent.plist 2> /dev/null /bin/launchctl load /System/Library/LaunchAgents/com.apple.alf.useragent.plist 2> /dev/null;; "false" | "FALSE" | "no" | "NO") echo "Disabling Firewall for OS $OS ..." /usr/bin/defaults write /Library/Preferences/com.apple.alf globalstate -int 0 2> /dev/null /bin/launchctl unload /System/Library/LaunchDaemons/com.apple.alf.agent.plist 2> /dev/null /bin/launchctl unload /System/Library/LaunchAgents/com.apple.alf.useragent.plist 2> /dev/null /bin/launchctl load /System/Library/LaunchDaemons/com.apple.alf.agent.plist 2> /dev/null /bin/launchctl load /System/Library/LaunchAgents/com.apple.alf.useragent.plist 2> /dev/null;; esac

exit 0;

[bcm]

I wanted to point out that @dieter.lohuis's explanation affects the Jamf provided firewall extension attribute as well. Found in Templates, and here: https://jamfnation.jamfsoftware.com/viewProductFile.html?fid=330. Perhaps @jake could update it.