weird nmap problems

["Joshua Perrymon" <josh.perrymon () purehacking com>]

[root@agentdev root]# nmap www. <http://www.xxx.com> xxx.com -p 80
 
Starting Nmap 3.95 (  <http://www.insecure.org/nmap/>
http://www.insecure.org/nmap/ ) at 2006-07-12 12:53 EST
Interesting ports on  <ftp://ftp.xxxx.com> ftp.xxxx.com (xx.xx.xx.xx):
PORT   STATE    SERVICE
80/tcp filtered http
 
Nmap finished: 1 IP address (1 host up) scanned in 0.368 seconds
[root@agentdev root]# nmap  <http://www.xxxxx.com> www.xxxxx.com -p 80 -P0
 
Starting Nmap 3.95 (  <http://www.insecure.org/nmap/>
http://www.insecure.org/nmap/ ) at 2006-07-12 12:53 EST
Interesting ports on  <ftp://ftp.xxxxxx.com> ftp.xxxxxx.com (xx.xx.254.253):
PORT   STATE SERVICE
80/tcp open  http
 
 
It seems that the scan returns filtered with this command
    [root@agentdev root]# nmap  <http://www.xxx.com/> www.xxx.com -p 80
 
But If I add the -P0 switch it comes back with an open port?????
 
Is this something on my network or nmap?
 
Thanks!
 
JP
 
 

Joshua Perrymon, C.E.H.


 


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