tmate authentication server error.

[Sayed Mohammad Badiezadegan]

Yes, I did it already but I have not connected to tmate server yet.

On Mon, May 12, 2025 at 1:58 PM Michael Neumann <mneumann at ntecs.de> wrote:

> You have to put "set -g ...." into file .tmate.conf !!
>
>
> Am 12. Mai 2025 15:21:05 GMT-04:00 schrieb Sayed Mohammad Badiezadegan <
> mbzadegan at gmail.com>:
>
>> Thank you Michael,
>>
>> When I installed the tmate, it showed me the following hints:
>>
>> Message from tmate-2.4.0_4:
>>
>> --
>> When trying to connect to the default public tmate server it may happpen
>> that
>> the following errors messages will be printed:
>>
>>   Connecting to ssh.tmate.io...
>>   Cannot authenticate server
>>   Reconnecting... (Cannot authenticate server)
>>
>> This is because the fingerprints of the default tmate server keys are
>> stripped
>> out from the tmate binary.
>>
>> Instead, users are encouraged to specify the fingerprints via
>> ~/.tmate.conf, e.g.:
>>
>>   set -g tmate-server-rsa-fingerprint
>> "SHA256:Hthk2T/M/Ivqfk1YYUn5ijC2Att3+UPzD7Rn72P5VWs"
>>   set -g tmate-server-ecdsa-fingerprint
>> "SHA256:8GmKHYHEJ6n0TEdciHeEGkKOigQfCFuBULdt6vZIhDc"
>> root at DragonflyBSD:~ #
>>
>> Now, I tried with your suggestion, but I still got the same error message.
>>
>>
>> root at DragonflyBSD:~ # set
>> tmate-server-rsa-fingerprint=SHA256:RZsuxQNR6+ZAty5fXINvarZK3aoZ3KfrSU6ZUONbo3E
>> set: Variable name must contain alphanumeric characters.
>>
>>
>> I think it is because of the "-" in the variable name, but I do not know
>> how to resolve it.
>>
>>
>>
>> On Mon, May 12, 2025 at 12:03 PM Michael Neumann <mneumann at ntecs.de>
>> wrote:
>>
>>> On Mon, May 12, 2025 at 11:49:25AM -0700, Sayed Mohammad Badiezadegan
>>> wrote:
>>> > Hi everybody,
>>> >
>>> > I installed tmate on one DragonflyBSD server, but I got the attached
>>> > screenshot error message:
>>> > [image: Screenshot 2025-05-12 114032.png]
>>> > I also want to set those 2 SHA256 variables, but it gave me the 2nd
>>> > screenshot error!
>>>
>>> Try "set variable=value". I dunno what "set -g" is used for.
>>>
>>> Regards,
>>>
>>>   Michael
>>>
>>>
>>>
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