I wish to have a toggle button to inhibits SSHd for every interface but USB tethering.
Also a timeout to disable the WiFi tethering would be apprecciated (complementary)
In the meantime, enjoy this patch:
I does not create such button / timeout but its description is a lesson of marketing, IMHO.
How to sell a small bounce of iptables rules as your life-saving never-less indispensable toy. 