tmate authentication server error.

[Michael Neumann]

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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