Re: Problem with nmap, command -P*

["Hans Nilsson" <hasse_gg () ftml net>]

If the scan is done on the local network Nmap uses an "ARP-ping" to
determine if a host's up or not. You can prevent that by using the
--send-ip option for example. If you only want to ping and not scan at
all you can also add the -sP option.


On Tue, 10 Apr 2007 16:20:56 +0200, "Oliver Kirsch"
<oliver.kirsch () gmx com> said:
> Hello,
>
>  
>
> i use your tool for experimental analyses for my study. I write in the
> moment diploma in Germany. Now I have a problem. I read some books and
> posted my problem in the networklab forum.
>
>  
>
> I want to scan my computer. Exacting I want to ping Hosts in my network.
>
> The following command do other things as you and all Documentations says:
>
>  
>
> Nmap –PU –v 192.168.1.0/24
>
>  
>
> Normally this call sends UDP-pakets on Port 80 in the net. If there are a
> host who is down I get back a ICMP-call.
>
> But it isn´t so. I use the Sniffer Wireshark.
>
> First ARP-Broadcasts are sending in the net. The host with the right
> IP-adress send a message that he has the IP. It´s ok. But then the hosts
> who
> are up, all ports are scaned with Syn-Stealth Scan. A list of open port
> from
> all hosts who are up are announced.
>
> The same procedure are with the Command –PA, -PS, -PI, -PB, -PR, -PP
>
> Why? I use nmap Version 4.20 on Windows and Linux Computers. At every
> Computer is the same problem. I have root  on Linux Suse 10.2 and I am
> administrator on Windows XP SP1.
>
> Nobody know why it is so. And I don´t know if the scan is correct on
> other
> Systems.
>
>  
>
> Thanks for reading my mail.
>
>  
>
> Greets
>
>  
>
> Oliver Kirsch
>
>  
>
>
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-- 
  Hans Nilsson
  hasse_gg () ftml net

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