OpenSSH Always Hangs When Connecting to Remote

Carlo Abelli carlo.abelli at
Mon Sep 21 12:43:31 AEST 2015

Thanks all. I'll check tomorrow if it is indeed the VPN by connecting to
the network and testing.

On Sunday, September 20, 2015, Ángel González <keisial at> wrote:

> On 20/09/15 20:28, Carlo Abelli wrote:
>> On 09/20/2015 03:25 AM, Darren Tucker wrote:
>>> I suspect a path mtu problem.  The key exchange packet is one of the
>>> first large ones in an SSH connection so it tends to show up such
>>> problems.
>>> See
>> Has this been changed? SSH used to work fine on my old machine. My local
>> mtu and server mtu are higher than required. Therefore the only thing I
>> could expect would be a lower mtu on the vpn. Has this changed in recent
>> versions. As previously I was using OSX I expect the OpenSSH version was
>> older. Still strange to me that it worked before and not now. I will
>> test tomorrow to see if connecting on the actual network solves the issue.
> New versions tend to add more key exchanges, so yes. You can also use
> ssh -o KexAlgorithms=<algos use by dropbear> to test the hypothesis.


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