How to make sure that network balls are not visible in an unfriendly network?

Question

macOS

I suddenly noticed that when I sit in some thread of the left cafe / guesthouse - all my balls are publicly available. What is the most convenient way to make everything open at home and closed in other networks?

Answer 1

If only by means of OS, disable File-sharing

File sharing

Answer 2

1. The task is not entirely clear - do you have a list of networks in which you need to open balls, or is it an abstract list.
2. If there is, try the firewall. You can reduce the chance if you can manage "trusted" networks - you can configure them to issue specific ranges from 172.16.0.0/31 instead of the standard WiFi networks 192.168.0.0/16 and 10.0.0.0/8. On the firewall, respectively, allow access to your PC only with (for example) 172.29.25.0/24
3. Why not just protect access to the balls with a password? Again, I don’t know how in OSX, in Windows you can save a login-password for accessing a network resource for absolutely
4. Again, I don’t know how in MAC, in Windows 7+ there is the concept of a home group (such as a WIndows domain for home)