Re: ncat broadcast support?

["Norris Carden" <ncarden () ascendfcu org>]

Adding broadcast support somewhere would allow for a DHCP test. Cool!


-----Original Message-----
From: nmap-dev-bounces () insecure org [mailto:nmap-dev-bounces () insecure org] On Behalf Of Daniel Miller
Sent: Thursday, May 13, 2010 5:19 PM
To: nmap-dev () insecure org
Subject: [BULK] Re: ncat broadcast support?
Importance: Low

On 05/13/2010 03:32 PM, Daniel Miller wrote:
> On 05/12/2010 05:53 PM, Fyodor wrote:
> > My initial thought is that maybe we should have a function like
> > nsp_setbroadcast() which specifies whether, from that point on, all 
> > newly created sockets should have SO_BROADCAST set.  I suppose it 
> > should probably default to false, just like in the socket API.  But I 
> > imagine that Ncat, Nping, and Nmap may want to enable this.  Ncrack, 
> > on the other hand, may not.
> >
> > The change would have to tested on Windows and UNIX.  If you really 
> > can't get access to a Windows system, you may be able to recruit 
> > testers on this list.
> >
> > So I'd encourage you to write a patch, and I definitely encourage 
> > other folks to chime in if they know stuff about SO_BROADCAST that we 
> > don't, or if they have any other implementation ideas or concerns.
> >
> > Cheers,
> > -F
> This is the suggestion that I took. I have attached the patch, which 
> appears to work well. I'll continue to test, and I'll see if I can try 
> it on Windows, though I haven't compiled Nmap on Windows before.
> Anyone who would like to test this out would be more than welcome.
>
> Dan
Found a couple errors while trying to compile on Windows (no prototype for nsp_setbroadcast, cast to void * instead of 
const char * in setsockopt call). Fixed patch attached.



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