-- applescript to switch firewall on/off
-- make it run on your remote mac (e.g. with Power Manager: http://www.dssw.co.uk)
-- or use a apple mail rule to start the runtime-version

set returnCode to do shell script "/usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate"

if returnCode = "Firewall is enabled. (State = 1) " then
	do shell script "sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate off" user name "xxxx" password "password" with administrator privileges
	delay 4
else
	do shell script "sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate on" user name "xxxx" password "password" with administrator privileges
end if

set returnCode to do shell script "/usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate"

display dialog returnCode giving up after 4