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From "Andreas Wallberg (JIRA)" <>
Subject [jira] [Commented] (VFS-412) [FTPS] Support to send execPROT("P")
Date Sun, 04 Nov 2012 22:08:12 GMT


Andreas Wallberg commented on VFS-412:

According to RFC 2228, ( that introduced PROT command,
"The PBSZ command must be preceded by a successful security data exchange.". I think this
means that "PBSZ 0" must be issued before "PROT P".
> [FTPS] Support to send execPROT("P")
> ------------------------------------
>                 Key: VFS-412
>                 URL:
>             Project: Commons VFS
>          Issue Type: Improvement
>            Reporter: Jose Juan Montiel
>            Priority: Minor
>              Labels: patch
>         Attachments: patch_412.txt, patch_exexprot.txt
>   Original Estimate: 1h
>  Remaining Estimate: 1h
> The layer over FTPSClient can't permit to send a client.execPROT("P") and this make in
FTPS explicit (with vsFTPd 2.0.7) make an error:
> SSL version: TLSv1/SSLv3, SSL cipher: DES-CBC3-SHA, not reused, no cert
> 522 Data connections must be encrypted.
> The patch offer via FtpsFileSystemConfigBuilder the option to set execPROT like do with

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