Re: ncat question

[David Fifield <david () bamsoftware com>]

On Wed, Jun 27, 2012 at 11:12:32PM -0500, Dennis wrote:
> Hello,
>
> I have been using this command string for sometime
>
> ncat -l -v -p 25 -k -c "ncat -v mx01.anglerlabs.com 587" > ncatlog.txt
>
> This successfully got around an imposed port blocking of my ISP for
> port 25.  This was true until 2 things happened.  I reloaded my
> system and our router had to be reset - to a pre-installation state.
>
> I've also used ncat -l -v -p 25 -k -o ncatdmp.txt  --- I would
> attempt to use the program that uses port 25 to send e-mail but
> nothing shows up in ncatdmp.txt.
>
> When I use   ncat mx01.anglerlabs.com 587, i am able to logon to the
> smtp server.
>
> If I have in one dos window the first command (ncat -l -v -p 25 -k
> -c "ncat -v mx01.anglerlabs.com 587"). Then in a second dos windows
> i would enter ncat mx01.anglerlabs.com 25.  It does not allow me to
> logon, it times out.
>
> This is the version information:
> C:\Dennis\ncexe>ncat --version
> Ncat: Version 5.59BETA1 ( http://nmap.org/ncat )
>
> I am using Windows Vista.
>
> Anything helpful you could suggest?

Please try the latest release 6.01. 5.59BETA1 may have some problems
with logging. Use the --append-output option to avoid having the log
erased each time Ncat respawns.

http://nmap.org/download.html

The cause of the problem will probably become clear very quickly if you
watch a packet trace with Wireshark while trying to connect with your
mail client.

David Fifield
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