domain network incoming connections

[Peterr]

In Defender under 'domain' >network incoming connections there is a blank box. Should this be checked or not?

 

[Neemobeer]

If your computer is joined to an active directory domain it's up to your IT department. If you're not on a domain the setting is irrelevant.

 

[Peterr]

What do you mean by being on a domain, if may ask?
Is it like being within an office network?
I am at home in my own network .