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I have an Amazon EC2 instance running Ubuntu 10.04. I created my new user with sudo useradd -d /some/path new_user.

Using the new_user, I created a new rsa key, using ssh-keygen -t rsa in the /some/path.

I combined the files to generate the authorized_keys file:

cat .ssh/id*.pub > .ssh/authorized_keys

So, I generated a ppk file with Filezilla and successfully connected to it.

But, one day after, I tried to connect again (with this ppk generated and my new_user), but it doesn't work.

I tried to recreate a new rsa key, just like before, but it still doesn't connect.

Wondering if there was a problem with the new_user created, I created another one (new_user2) and its rsa key. Again, it doesn't work.

At login time server says 'server refused our key' and no supported authentication method available popup.

The ec2-user named ubuntu (default user) works ok.

Does anyone know what could be happening?

I used this tutorial as reference.

I still tried to use this another one, but I came across the same issue.

Below is my putty.log file after this issue:

    =~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2013.08.22 09:39:08    =~=~=~=~=~=~=~=~=~=~=~=
login as: new_user
Server refused our key

Thanks in advance.

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Could you provide the ssh (or putty) logs to the ec2 instance? for ssh, just use ssh -v new_user@your-ec2-ip –  number5 Aug 21 '13 at 23:55
    
@number5, I updated it with my putty.log. It helps? –  José Filipe Lyra Aug 22 '13 at 12:47
    
hmm, I should say I need the event log e.g. static.thegeekstuff.com/wp-content/uploads/2009/08/… try this: When you are logged-in to a PuTTY SSH session, right mouse-click on the PuTTY window title, which will display PuTTY menu. Select ‘Event Log’ menu-item, which will display the following PuTTY event log window. then copy and paste in your question –  number5 Aug 23 '13 at 0:10
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