Mac insider tip: macOS tool nettop for evaluating network traffic

net top utility internet ports

Nettop is not only the term for cheap mini PCs that are made for surfing, word processing and e-mail, but also a tool under Apple macOS with which you can Network of the Mac or the communication with the Internet. With the nettop Tool and macOS you have the possibility to read the network traffic of the Apple computer, to see which programs are using which ports, and much more. Here I would like to briefly show you what else you need to know about the tool on Mac, iMac and MacBook.

The Apple tool nettop under macOS on Mac, iMac and MacBook shows you the network traffic and many other details.

The Apple tool nettop under macOS on Mac, iMac and MacBook shows you the network traffic and many other details.

Call the Network Tool nettop on the Mac

How do you get to the Mac tool nettop? It's pretty easy, namely via the terminal. You can find the terminal in the Mac's utilities or by searching (cmd + space bar) with the term “Terminal”. So if you have this system program open, just type in the term “nettop” and confirm your entry. Here are the coolest features of the network reading tool:

  • you can see the roundtrip time of the connections (how long does the signal take there and back)
  • you can see immediately which program is using which ports
  • you can see which programs implement connections with IPv6 or IPv4
  • you can scroll the list in the terminal and it is constantly updated
  • it's just a cool tool if you have to do something on a friend's Mac and you want to make an impression ... then it's best to place the terminal on a black background with green letters so that it looks really nerdy: D

Operation of nettop with the keyboard

So if you want to read the network traffic on your Apple computer with nettop, you will get a lot of information in one fell swoop. And these are also constantly updated. Therefore you still need a few key commands to scroll around in the program. This is how you keep track of things:

  • Up arrow: scroll up
  • Down arrow: scroll down
  • Left arrow: scroll left
  • Right arrow: scroll right
  • R: Realign the display
  • E: enlarge / maximize
  • C: minimize
  • H: Help menu
  • J: nettop column menu for activating and deactivating or arranging content
  • D: Toggle Delta Output
  • P: Switch to readable values
  • Q: nettop close

Further details on the nettop network tool and its operation on the Apple Mac or usage options under macOS can be found on the Apple's developer site.

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