What does it mean (PUTTY)?

Question

SSH

What does it mean? How to fix this error?

Answer 1

From the server side, simple passwords are not supported as an authentication method:
Use keys. To do this, in PuTTY, specify the path to the private key in Connection → SSH → Auth, while the public part of the key should already be on the server.

Answer 2

This server does not support keyboard entry as an authentication method, only keys. I usually put this on the account of automatic machines so that different assholes do not climb.

Answer 3

To fix the error, use puttygen.exe (included in putty) to generate a key, save it to a safe place (Save private key button), specify the file with the private key in the putty settings in the section where Pavel indicated above in the answer, and the public part of the key , which is displayed in puttygen in the text field above, paste it into the file ~/.ssh/authorized_keys (if the file does not exist, create it, it must be a text file without extension, ~ means the home directory of the user for whom access by this key should be allowed, for root it is /root/.ssh/authorized_keys )