So, I ran a bunch of port scans on this using netcat, 1 - 65355 at the speed of one port per second. Taken around 18 hours and turned up a very small number of ports. Is this normal behavior for this box? Guessing it is, but just need a sanity check.
One port per second? I used -T5 on my nmap and had full scan done in ~ few mins. and Yes this machine is set to filter almost every port