And then you have applications like Skype that need all ports: https://support.microsoft.com/en-us/skype/which-ports-need-to-be-open-to-use-skype-on-desktop-fe6

And then you have applications like Skype that need all ports: https://support.microsoft.com/en-us/skype/which-ports-need-to-be-open-to-use-skype-on-desktop-fe63a90c-f4a8-492c-8926-f3c3b2681a14 https://support.microsoft.com/en-us/skype/which-ports-need-t...