It means that the specific port that you are looking at is being filtered or blocked by your Network Security Administrator.
Terry D. On Mon, 28 Jul 2003, marc brown wrote: i am new to linux but after getting my rh9 box running i have started to use nmap to do some scanning of my networks. can someone tell me exactly what it means when the state of a particular port is 'filtered'? thanks, marc --------------------------------------------------------------------------- ---------------------------------------------------------------------------- --------------------------------------------------------------------------- ----------------------------------------------------------------------------