A Port basically serves as an interface between your computer and the internet or other computers in the network. Every communication over the web is exchanged using these ports, so they are an ...

10 ways to check ports in Linux to help troubleshoot systems Your email has been sent System and network troubleshooting often involves checking and obtaining information about ports to ensure ...

Most people might figure that once you set up your network security-wise, what's done is done, and besides routine updates, ...

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.