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https://issues.apache.org/jira/browse/FTPSERVER-97?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12504201
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Niklas Gustavsson commented on FTPSERVER-97:
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The current setting leaves it up to the client to decide on the security level 
it wants. We should probably provide a way to enforce this on the server side 
(like we allow a way to enforce SSL/TLS at all). How about providing a 
configuration option where you can set the allowed ciphers? If we do, what 
value should we use default?

> SSL data connection enables all supported ciphers
> -------------------------------------------------
>
>                 Key: FTPSERVER-97
>                 URL: https://issues.apache.org/jira/browse/FTPSERVER-97
>             Project: FtpServer
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.0-M1
>            Reporter: Steve Jones
>
> The SSL implementation that is used by default for FTP data transfers 
> (DefaultSsl) enables all SSL cipher suites:
>   String cipherSuites[] = serverSocket.getSupportedCipherSuites();
>   serverSocket.setEnabledCipherSuites(cipherSuites);
> This is likely to enable ciphers such as:
>   SSL_RSA_WITH_NULL_MD5
>   SSL_RSA_WITH_NULL_SHA
> Which means that there is no confidentiality for the transport (in other 
> words authentication will occur but after that communication is in the 
> clear). 
> Usually you would not want to allow this, so it is best not to enable all 
> ciphers.
> Here's a reference to this issue for another apache project:
>   http://mail-archives.apache.org/mod_mbox/avalon-apps-dev/200209.mbox/[EMAIL 
> PROTECTED]

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