Forum Thread: Port Scanning - Purpose

Hey there,

I have one question.

I read a lot of threads and tutorials in this forum, but I have some problems to understand the purpose of port scanning.

I know that you have to know as much as possible about the "enemy", but how do open ports help me at this?

If I would know, e.g. that port 4040 is open, what would that mean to me?
That I should attack through this port or that the port isn't secured by the AV?

Sorry if this question is to basic, but I hate it, if I don't understand everything.

Greets

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