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  | blocking ports where there are no services doesn't
  | do much
True, but it can be a useful 'just in-case' against things listening on ports that you were unaware of. It's obviously bad for you not to know about services that are listening on your box, but you could view it as a safety net.


Agree, I also block all unused incoming ports as a safety net as you say.


Probably easier to just use a whitelist policy, no?


Of course; implementation of the idea is whitelist: allow used ports default policy deny all




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