$ ssh-copy-id username the message prompted, type ‘y’ for yes, which will copy the key. The next step is to copy the public key to our Ubuntu server. Now we have to place the public key on our server to enable SSH-key-based authentication.

We will then see an output showing we have obtained the public-private key pair for authentication. Having done that, the system will prompt us to enter a passphrase which is highly recommended for an extra layer of security that won’t let unauthorized users log in. This step should be followed when the SSH fails to identify the host system or gives a “no authenticated support” error. If a key already exists, we will be asked to overwrite it once we choose to do so, we won’t be able to use the previous key for authentication anymore. ssh/ subdirectory or choose an alternate path. This command creates a 2048-bit keypair which is secure enough for most remote protocols, but we can generate a 3072-bit pair by typing in –b 3072 or a 4096-bit pair by typing –b 4096Īfter entering the command, we will see a message stating the generation of public-private key pair, and the terminal will prompt us to state the name of the file in which to save the key. We start by generating a key pair using the command. We now dive into the process of authenticating a remote host to successfully enable system usage Procedure to enable supported Authentication This issue has various causes, the notable ones being that some settings may have been tweaked or error on the part of the user, while in other cases, the user may have TIS or keyboard authentication disabled.

This error indicates that our SSH client (mostly PuTTY) has probably run out of ways and can’t authenticate us to an SSH server.

Expanding on that, we often encounter an error that states: “no supported authentication methods available.” In such situations, we may use SSH servers which makes our network service secure over an unsecured network. However, to keep ourselves safe, we need to ensure we are secure and our privacy is not compromised. There are times when we may need to access our system remotely on our insecure network. Whether at work or leisure, we find ourselves hooked to our systems in one way or the other. Computer systems have become an integral part of our everyday life.

Filezilla server refused our key