[GTALUG] dh key exchange question.

[Karen Lewellen]

Hi Mike,
Thanks for that information.
I would feel better though if  the same problem was not happening 
practically everywhere else.
i can check my list, I believe, but imagine it will take someone skilled 
in compiling to update anything.
Meaning I will need to either find that skill, or move our office hosting 
services  somewhere equal to dreamhost but less paranoid.
Thanks again,



On Tue, 2 Oct 2018, Mike wrote:

> Hi Karen,
>
> I found a reference at Dreamhost wherein a user says that Support hold
> him that "diffie-hellman-group1-sha1 was recently removed for security
> concerns".  This is 26 days ago.  The reference URL is:
>
> https://discussion.dreamhost.com/t/ssh-issue-with-key-exchange-algorithms/68804
>
> It may be that your SSH client does not support newer DH modes, for
> example group 14.  Is there a way you can find out what key exchange
> modes and ciphers your SSH client supports?
>
> Regards,
> Mike
>
>
> On 10/2/18, Karen Lewellen via talk <talk at gtalug.org> wrote:
>> Hi folks,
>> The accessible ssh client I use provides a way to send dh keys when I use
>> ssh TELNET to reach a location.
>> I have a bell dsl account, and since the first of July I have not been
>> able to reach dreamhost who hosts my office shell.
>> While I have not ruled out Bell as the problem, it started  one day when
>> they claimed to have a service interruption,  and refuse to discuss Linux
>> at all, I want to see if something else might have happened.
>> With very few exceptions, every place where I visit involving port 22
>> presents the same dh key exchange failure.
>> Was openssh updated on June 29 2018?
>> Hosting companies who use some  different Linux options for their shell
>> services, scientific for example, still work.  Shellworld does too, but we
>> use  a different port for ssh and the administrator  still allows most
>> public keys.
>> can anyone provide wisdom here?
>> Thanks,
>> Karen
>>
>>
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>
>