Re: Port number in verbose mode

[rebellis <rebellis () gmail com>]

Hi

Please correct me if I'm wrong but it looks like the solution is quite
simple (see patch attached). I couldn't test it on revision 17520
(Nmap doesn't compile on my box -- got lots of linking errors related
to libpcap). However, when compiled against Nmap 5.21 sources the
patch seems to work nicely:

rebellis@dagon $ ncat -l -v -k
Ncat: Version 5.21 ( http://nmap.org/ncat )
Ncat: Listening on 0.0.0.0:31337
Ncat: Connection from 127.0.0.1:40521.
Ncat: Connection from 127.0.0.1:40524.


rebellis@dagon ~ $ netstat -nap | grep telnet
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 127.0.0.1:40524         127.0.0.1:31337
ESTABLISHED 3126/telnet
tcp        0      0 127.0.0.1:40521         127.0.0.1:31337
ESTABLISHED 3125/telnet

--
rebellis


On Sat, May 8, 2010 at 6:33 PM, David Fifield <david () bamsoftware com> wrote:
> On Thu, May 06, 2010 at 04:42:12PM +0200, Dite Sirte wrote:
> > I know it's not a bug, but I miss a function in the excelent ncat tool.
> > In listening mode, the classic nc (with the verbose flag on) prints a
> > message for each client connected, showing its IP and source port. But
> > ncat shows only the source IP. For debugging on some client programs it
> > will be interesting to know the source port of the connection, I think.
> > Sorry for my poor english, and thank you all for the gorgeous tools.
>
> I think this is a good idea. I want to suggest that this is a good task
> for someone who wants to start working on Nmap. People always ask "how
> do I get started?" and it's with tasks like these. This is enough to get
> your name in the CHANGELOG and start doing more ambitious things.
>
> The problem Dite described is this: When I run an Ncat server and then
> connect to it, I see
>
> $ ./ncat -l -k -v
> Ncat: Version 5.30BETA1 ( http://nmap.org/ncat )
> Ncat: Listening on 0.0.0.0:31337
> Ncat: Connection from 127.0.0.1.
>
> Instead, I should see something like
>
> $ ./ncat -l -k -v
> Ncat: Version 5.30BETA1 ( http://nmap.org/ncat )
> Ncat: Listening on 0.0.0.0:31337
> Ncat: Connection from 127.0.0.1:49152.
>
> Once you've implemented this, run "svn diff > ncat-srcport.diff" and
> send the patch to this mailing list. If you have questions or want to
> claim this job, just speak up.
>
> David Fifield
> _______________________________________________
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