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https://issues.apache.org/jira/browse/FTPSERVER-341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Niklas Gustavsson updated FTPSERVER-341:
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    Affects Version/s: 1.0.0
                       1.0.1
                       1.0.3
        Fix Version/s: 1.1.0
                       1.0.4
             Assignee: Niklas Gustavsson

> Handling invalid port number from client
> ----------------------------------------
>
>                 Key: FTPSERVER-341
>                 URL: https://issues.apache.org/jira/browse/FTPSERVER-341
>             Project: FtpServer
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.0.0, 1.0.1, 1.0.2, 1.0.3
>         Environment: Windows XP, JDK 1.6.0_10, Intel Xeon processor
>            Reporter: Satish Kaveti
>            Assignee: Niklas Gustavsson
>             Fix For: 1.0.4, 1.1.0
>
>
> Some FTP clients occasionally sends a invalid PORT number (PORT 0,0,0,0,0,0) 
> (Tested with Python Ftplib and Windows WinInet API). The FtpServer server 
> accepts the port number and starts processing the following STOR command. It 
> sends 150 response. But during the call to openConnection inside 
> STOR.execute( ) an exception is caught and the server responds with code 425. 
> It is causing the FTP client to hang. It will perhaps be bettter if the 
> server detects invalid port number and reject the STOR request with response 
> 451.

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