Well... i have more info about my situation. A) I can do the scan only with FIN, Xmas or Null scan of Nmap in order to identify the ports open B) i can scan maximum 14 ports each time, otherwise everything is seems closed. among the 14, i can specify whatever port that i want and it will be always open C) no option selected in the panel "general option" because otherwise i do not obtain ports open
which kind of host is? is it a firewall? what can give me all the ports open but permit me to scan only 14 at each time? Thanks for your help! regards, Francesco S. On Tue, Apr 8, 2008 at 10:13 PM, francesco sottini <[EMAIL PROTECTED]> wrote: > How can i set the SYN scan "half open"? > remember that i am using the nessus server... > > thanks! > > On Tue, Apr 8, 2008 at 7:07 PM, Michel Arboi <[EMAIL PROTECTED]> wrote: > > > Le Tue, 8 Apr 2008 18:06:35 +0200, > > "francesco sottini" <[EMAIL PROTECTED]> a écrit : > > > > > Nmap with Xmas tree scan setted, i obtain that whatever port number > > > i scan, it is open and no other information. > > > > That's normal if the machine is unresponsive. > > Xmas Tree portscan is useless for a vulnerability audit. Use SYN "half > > open" scan or full TCP scan. > > > > > > -- > Francesco S. -- Francesco S.
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