(With -T1 it's 217sec). So -T5 helps but it's still very slow. An online port scanner like grc.com can find a port over the internet faster. I was hoping it could do ...

While nmap is generally used to probe business networks and perform security reviews, the tool can also provide interesting details on your systems and devices at home. Nmap, the “network mapper,” has ...

I'm looking for an online port scanner that lets me give it an IP and list of ports, and tells me if ports are filtered or closed. (like how nmap mentions filtered or closed) GRC shields up refers to ...