nc question

["vijay shetti" <vijay.shetti () gmail com>]

hello friends!!

I have a query regarding netcat's usage for port scanning.

I am scanning a windows machine which has 2 ports open 80 and 3389.

c:>nc -z -v target 80,3389

It shows only port 80 open,it does not consider 3389 port as an argument...

My question is if I want to scan only known ports like 21,23,80,3389
using netcat,then how can i specify them as argument?

regards,
Vijay.

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