osx: write firewall rules
We need rules for fail-close in eip.
Here there is a version that elijah wrote:
https://gist.github.com/kalikaneko/254f757f7a604fa5112d
I didn't get it working tho.
(from redmine: created on 2015-10-08, closed on 2016-03-31, relates #7520 (closed))