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Old 06-11-2025, 01:14 PM   #8
amar
Junior Member
amar began at the beginning.
 
Posts: 8
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Join Date: Jun 2025
Device: Kindle3 Keyboard
Quote:
Originally Posted by DNSB View Post
Going off the top of my head here, but the receive packet: type 51 is an authentication failure so it would appear that your public key is not being accepted.
This would explain why I cannot get in.
Can you advise what exactly key should I generate for Kindle 3 Keyboard?

I tried default one (RSA 3072), RSA with 4096, ed25519 (default 256), I tried some parameters like described above:
Code:
ssh -i ~/.ssh/kindle_ed25519 -oKexAlgorithms=+diffie-hellman-group1-sha1 -oStrictHostKeyChecking=no root@192.168.2.2
I can also post the whole ssh debug output but this is long and not sure if I can spam this forum like that or maybe use some pastebin.

I tried again from my laptop with fresh Mint 22.1 and on Kindle in /var/log/messages this popped up:
Code:
250611:190653 dropbear[4579]: Child connection from 192.168.2.1:43320
250611:190653 dropbear[4579]: Pubkey auth attempt with unknown algo for 'root' from 192.168.2.1:43320
250611:190656 dropbear[4579]: Bad password attempt for 'root' from 192.168.2.1:43320 (But we're letting you in because we're a nice Kindle ;))
This would also confirm what you wrote, some wrong 'algo' means I guess 'algorithm'?
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