I'd like to use the default Firewall manager app to setup a firewall, but adding an entry for "DNS, port 53" does not seem to do the trick. DNS traffic is blocked when the firewall is on.
Looking in /etc/ipfilter/ipfw.conf.apple I can see that adding that entry created a line for exposing TCP traffic on port 53, but not UDP.
Is there a way to do this, or do I need to resort to manual ipfw.conf setup?