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Re: reply: problem with nc 1.107-4
- From: Andrey Repin <anrdaemon at yandex dot ru>
- To: 高锋 <gao_feng at 139 dot com>, cygwin at cygwin dot com
- Date: Thu, 30 Mar 2017 19:38:42 +0300
- Subject: Re: reply: problem with nc 1.107-4
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- Reply-to: cygwin at cygwin dot com
Greetings, 高锋!
Please don' top-post. Thank you.
> Two days ago,i wanted to determine whether a udp port of another machine is
> open or not, which is deployed on different subnet.
> But windows platform does not provide utility that can dose this.So i
> downloaded a setup.exe from cygwin,of which version is 2.877(64 bit),and i had never use this utility before.
UDP protocol is inherently stateless.
You can't determine remote port state unless it explicitly reported (i.e.
answers to the messages sent on that port).
--
With best regards,
Andrey Repin
Thursday, March 30, 2017 19:36:15
Sorry for my terrible english...
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