Salut,
Merci RedNotesBook :-D,
Voici mes notes de l'époques (dans la langue de Shakespeare) et le lien ou j'avais trouvé l'info :
Question: My FTPS client has trouble connecting to proftpd using SSL/TLS, with the following error appearing in the TLSLog:
Sep 17 11:03:46 mod_tls/2.1.2[9628]: TLS/TLS-C requested, starting TLS handshake
Sep 17 11:03:46 mod_tls/2.1.2[9628]: unable to accept TLS connection: received EOF that violates protocol
Sep 17 11:03:46 mod_tls/2.1.2[9628]: TLS/TLS-C negotiation failed on control channel
Is this a bug in mod_tls, in the client, or something else?
Answer: There might be several different causes for this error. It could be a bug in the OpenSSL library, in mod_tls, in the FTPS client, or it could be a transient network issue.
Now, one possible thing to try is to use the following in your proftpd.conf file:
TLSOptions NoCertRequest
This option tells the OpenSSL library to not include a message requesting the client's certificate in the SSL/TLS handshake messages. Some older SSL implementations seem to have trouble with this certificate request message, and react badly. This includes some Windows FTP clients, as well as some FTP clients for the Mac.
One user tried using both the Transmit and the Fetch applications for the Mac; both state that they can handle FTP over SSL/TLS. Using both of these applications, the user saw the above error. The user, when using Transmit, saw the following error message appear from the client:
Server said:
AUTH TLS successful
error:00000000:lib(0):func(0):reason(0)
And when using Fetch, the error message displayed by that client was:
SSL Error -9844
Server responded: "AUTH TLS successful"
In both causes, using "TLSOptions NoCertRequest" appeared to make those clients happy.
http://www.proftpd.org/docs/howto/TLS.html