The Nmap Project just released the Holiday Edition of its open source cross-platform security scanner and network mapper, with several important improvements and bug fixes. New features in Nmap 7.40 ...

(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 ...

Port scanning tries to reveal any entry points into a system. A web server, for example, must have port 80 open. Even if a firewall protects all else on the machine, by the necessity of its function ...