Nmap Development mailing list archives

Re: Proposal for ncat improvement


From: Ulrich Heuser <heuser_uli () hotmail com>
Date: Wed, 12 Dec 2018 10:41:31 +0000

Dear nnposter,
this was a perfect answer -- of course it helped to solve my little issue of missing the http-response due to 
connection closing by ncat. With the mentioned option
--no-shutdown it behaves exactly as wanted. Thanks a lot.

Btw., as I am using nmap on Windows/DOS, I was not aware of the above option for ncat. The Usage/Help of ncat under DOS 
does no mention the --no-shutdown option. Looking up the man page for ncat on Linux I found it well documented in the 
usage/help output.

Cheers,
Uli

________________________________
From: dev <dev-bounces () nmap org> on behalf of nnposter <nnposter () users sourceforge net>
Sent: Tuesday, December 11, 2018 21:41
To: dev () nmap org
Subject: Re: Proposal for ncat improvement


On 12/11/18 5:01 PM, Ulrich Heuser wrote:
Dear all,
I found a relevant diff between the original netcat tool and ncat out of
nmap:

On sending out a http-request by netcat the connection is kept alive for
a long period, and this supports receiving a http-response from the
addressed counterpart.

With ncat the connection is closed after 1 sec., and the comm.
counterpart is not able to send a http-response to the ncat requestor
after that amount of time.


It would be useful to extend the options of ncat by a keep-alive
time-val. and to keep the connection open for such given period to allow

While not exactly the same, would option --no-shutdown help in your
situation?

Cheers,
nnposter
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