Re: Bug(wish) with Ncat

[David Fifield <david () bamsoftware com>]

On Thu, Jul 15, 2010 at 07:39:38AM +0300, דוד חי גוטויליג wrote:
> In both the latest release version & the development (5.21 & 5.30BETA1).
>
> When I try to use Ncat with OpenSSH client as ProxyCommand with verbose
> flags for Ncat it's screw's up the connection, because NSOCK debugs to
> STDOUT!!!
>
> I believe you have a purpose behind this, so at least I wish for a deferent
> flags for the verbosity of Ncat & Nsock.
> Keep the good work,

That's a good idea. I've added a note to todo/nmap.txt to allow logging
to stderr. In the meantime, I think that Ncat will not print any Nsock
messages if you use -vv and not -vvv.

> Also in the release version (5.21), I have encountered a problem with the
> socks4 proxy when Ncat is been used inside OpenSSH client's ProxyCommand,
> for some reason Ncat will not pass the incoming stream back to the ssh
> client. I couldn't figure way.
>
> Here is a sample output:
>
> OpenSSH_5.4p1, OpenSSL 1.0.0a-fips 1 Jun 2010
> debug1: Reading configuration data /etc/ssh/ssh_config
> debug1: Applying options for *
> debug2: ssh_connect: needpriv 0
> debug1: Executing proxy command: exec ncat -v --proxy
> 127.0.0.1:4444--proxy-type socks4 SOMESERVER 22
> .....
> .....
> Ncat: Version 5.21 ( http://nmap.org/ncat )
> Ncat: Connected to proxy 127.0.0.1:4444
> debug1: ssh_exchange_identification:
>
> and here it's just hangs.

Does this happen with the latest version too? Please post the exact
commands your are using (you can use SOMESERVER in place of the server
name). This includes the ssh command and the command to start the proxy.

David Fifield
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