Portmaster isn’t just a cross-platform network monitor — it’s also a very powerful security tool that can help to lock down your desktops and block things like ads, trackers and malware. I’ve been ...

Through the years, Apple has released different Mac models that have an assortment of ports that fit the needs of specific users: the power port, which could either use MagSafe or USB-C technology, ...

You could try telneting to port 139 from an outside machine. If you get anything other than an access denied, you likely have an open port.