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Re: Can not make port forwarding from Cygwin when ControlMaster/ControlPath used.
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Mon, 13 Feb 2012 14:53:13 +0100
- Subject: Re: Can not make port forwarding from Cygwin when ControlMaster/ControlPath used.
- References: <84r4xzw0q8.fsf@bifit.com.ua>
- Reply-to: cygwin at cygwin dot com
On Feb 13 11:18, Oleksandr Gavenko wrote:
>
> I can forward port from Cygwin to Debian:
>
> cygwin# nc -l -p 6000
>
> debian1# ssh -L 7000:cygwin.host:6000 user@cygwin.host
>
> debian2# telnet localhost 7000
>
> But if do same in inverse direction I got:
>
> debian# nc -l -p 6000
>
> cygwin1# ssh -L 8000:debian.host:6000 user@debian.host
>
> bind: Address already in use
> channel_setup_fwd_listener: cannot listen to port: 8000
> Could not request local forwarding.
>
> I don't understand what this mean...
>
> netstat under Cygwin is Windows utility:
>
> debian# netstat -l -n | grep 6000
> tcp 0 0 0.0.0.0:6000 0.0.0.0:* LISTEN
>
> cygwin2# netstat -n -a -n
>
> TCP 127.0.0.1:8000 0.0.0.0:0 LISTENING 2308
> [ssh.exe]
>
> Note that ssh.exe is not "ssh -L" but that I run to connect to debian.host for
> "nc -l -p 6000".
>
> To resolve issue I comment this line in ~/.ssh/config:
>
> # ControlPath ~/.ssh/sock_%r@%h_%p
> # ControlMaster auto
Works for me with or without these lines.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
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