Question about Server Authentication

[Steeve BARBEAU]

no ideas about my problem ? I don't known where i can found the answer so i
need your help

On Tue, Sep 8, 2009 at 12:08 AM, Steeve BARBEAU <petfire85 at yahoo.fr> wrote:

>
> Hi guys,
>
> I'm working on a project which concern SSH and there is something i don't
> understand about server authentication. So I explain my problem:
>
> - When you authorize only RSA keys in the sshd_config on the server, you
> need to have the RSA public key of this server in the known_hosts file of
> the client. This is absolutely normal.
>
> - When you authorize only DSA keys in the sshd_config on the server, you
> need to have the DSA public key of this server in the known_hosts file of
> the client. This is also absolutely normal.
>
> - But when you authorize both RSA and DSA keys, you are obliged to have the
> RSA public key in the known_hosts file, without it fails. If there is only
> DSA in the known_hosts file it fails, and this is that I don't understand.
> Why the server authentication doesn't work with the DSA key when both DSA
> and RSA are authorize. (Of course if both are present in the known_host
> file, it works). So if somebody can help me about this, it will be nice ;)
> I've read lot of documentation, a little the 4 RFC but I haven't found the
> answer to my question.
>
> Steeve
>
>
>
>
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