If you want more information, it is available in the nmap man page (run the command 'man nmap' at the prompt), or the nmap web site, which is at http://www.insecure.org/nmap.
David
From: john mathew <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: nmap status question Date: 29 Jul 2003 07:27:42 -0000
In-Reply-To: <[EMAIL PROTECTED]>
Hi Marc ....
A port is in either of the two states ie , open or closed at any point of time. But using a firewall a particular port can be blocked.In such a scenario when nmap is run aganist a system which has a particular port blocked by a firewall , then the nmap result will show that the particular port as filtered .
Normally nmap will show only two types of output ie the open and the filtered ports , the closed ports are not shown .
Regards
Mathew
> >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 > >-------------------------------------------------------------------------- - >-------------------------------------------------------------------------- -- > >
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