Re: Detecting hosts in large subnets

[Hillel <hillel.t () gmail com>]

On 12/26/05, Andreas Ericsson <ae () op5 se> wrote:
> Hillel wrote:
> > nmap -sP -n --max_rtt_timeout 50 --max_scan_delay 0 --min_parallelism
> 100
> > <subnet>
> > The command takes 87 seconds to a mostly empty class B subnet.
> >
> > I have a number questions:
> > 2. Are there any other suggestions to improve performance?
>
>
> -T Insane


According to this article:
http://www.networkuptime.com/nmap/page09-09.shtml-T insane is actually
slower then the defaults I selected, and trying to use
it instead of them slows me down a lot. If I just add it to the command line
before the rest of the args, the time doesn't change as my values override
it's defaults.

> 4. Are there any licensing issues when including nmap and libpcap (it's a
> > windows app) in a commercial release?
>
>
> You have to provide the sourcecode through the same medium the binary
> was made available through. It has to be available on the CD if you ship
> your app on CD. If you make it available for download you have to
> provide that version's sourcecode on your site.


Thanks for the info.


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