AppleScript to keep a VPN connection alive

keepalive.applescript

repeat
	tell application "System Events"
		tell current location of network preferences
			set myConnection to the service "YOUR_VPN_NAME"
			if myConnection is not null then
				if current configuration of myConnection is not connected then
					connect myConnection
				end if
			end if
		end tell
	end tell
	delay 30
end repeat