I recommend you also try -vv and -vvv, which provide increasing levels
of debug output. With past SSH problems, it has helped me.
From the man page of ssh:
-v Verbose mode. Causes ssh to print debugging messages
about its progress. This is
helpful in debugging connection, authentication, and
configuration problems. Mul‐
tiple -v options increase the verbosity. The maximum is 3.
On Thu, Dec 4, 2014 at 10:15 PM, Yair Zaretski <zaret...@me.com> wrote:
> Hi All,
>
> I have an AIX machine which is trying to connect to an SSH server I’ve setup
> through Cygwin on a Win 2008 Server.
> The connection is unsuccessful due to unmatched key exchange algorithms.
>
> As far as I can tell, both the AIX machine and the Cygwin SSH server have at
> least a few SSH cipher algorithms in common.
> However, even setting a specific cipher on the AIX side (via "ssh -c
> cipher-type" command) does not work.
>
> Connection from any Linux server to the AIX and to the Cygwin SSH are
> successful.
> In addition, connecting from the Cygwin to the AIX is successful.
>
> I’d appreciate any help here.
> Please see below the output of “ssh -v windows-server” command on the AIX
> server:
>
> [aix-host] # ssh -v windows-server
> OpenSSH_3.8p1, SSH protocols 1.5/2.0, OpenSSL 0.9.6l 04 Nov 2003
> debug1: Reading configuration data /usr/local/etc/ssh_config
> debug1: Connecting to windows-server [windows-server-ip] port 22.
> debug1: Connection established.
> debug1: identity file /home/user/.ssh/identity type -1
> debug1: identity file /home/user/.ssh/id_rsa type 1
> debug1: identity file /home/user/.ssh/id_dsa type 2
> debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7
> debug1: match: OpenSSH_6.7 pat OpenSSH*
> debug1: Enabling compatibility mode for protocol 2.0
> debug1: Local version string SSH-2.0-OpenSSH_3.8p1
> debug1: SSH2_MSG_KEXINIT sent
> debug1: SSH2_MSG_KEXINIT received
> debug1: kex: server->client aes128-ctr hmac-sha1 none
> debug1: kex: client->server aes128-ctr hmac-sha1 none
> no kex alg
> [aix-host] #
>
> Thanks.
> Yair Zaretski
>
>
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