Re: ncat broadcast support?

[Ron <ron () skullsecurity net>]

I believe what you need to do is find out where it calls Socket() and add a call to Setsockopt() with SO_BROADCAST set 
to 1. 

Search udp.c in my nbtool codebase for 'SO_BROADCAST':
http://svn.skullsecurity.org:81/ron/security/nbtool/udp.c

To see an example. 

Hope that helps! 

On Tue, 11 May 2010 15:00:22 -0500 Daniel Miller
<bonsaiviking () gmail com> wrote:
> I would like to use ncat in UDP mode to send broadcast datagrams, but
> I get "permission denied" errors, even running as root. I understand
> that there are differences in how to call the underlying system calls
> when connecting to broadcast, and I'm willing to attempt a patch, but
> I don't know where to start. Could someone give me a quick pointer to
> the files I'd have to change to get this to work?
>
> doesnotwork# ncat -vvvvv --udp 192.168.1.255 161
> Ncat: Version 5.30BETA1 ( http://nmap.org/ncat )
> NSOCK (0.0010s) UDP connection requested to 255.255.255.255:161 (IOD
> #1) EID 8
> NSOCK (0.0010s) Callback: CONNECT ERROR [Permission denied (13)] for
> EID 8 [255.255.255.255:161]
> Ncat: Permission denied.
>
> Thanks for any assistance (or "No, that's a bad idea," as the case
> may be)
>
> Dan
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-- 
Ron Bowes
http://www.skullsecurity.org
http://www.twitter.com/iagox86

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