Run the command "netstat -ab" in an elevated Command Prompt, PowerShell, or Terminal window to see a list of applications and ...

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 ...

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.