For example this question would benefit from being 2 separate questions, one about DDOS and one about Tezos ports - How to secure baking node from attacks like DDOS?
Should the original question be closed and two separate questions created or is there another more appropriate way?
When a question is actually asking 2 or more different things, it should be closed as "too broad". This is the description of it (emphasis mine):
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question.
The question you linked to seems to be asking multiple similar but different questions. It should be closed as "Too Broad".
