ProFTPD Upload Error – How to Fix ProFTPD Cannot Upload (550 Error)

ftpproftpd

I have Proftpd installed on Ubuntu 9.04 server. FTP users are listed in auth file, e.g. these are not proper linux users, just FTP. They can connect and download files but when it comes to MKD or uploading, its always 550: Permission denied error. I've read quite a few tutorials on the net and still cannot get it working. I'm quite new to server administration… goes without saying.

proftpd.conf:

<Directory /path/to/relevant/dir>
 Umask 022 022
 AllowOverwrite                 on
       <Limit WRITE>
        AllowAll
      </Limit>
</Directory>

Relevant dirs are owned by the user proftpd runs as. They have writing permissions. I suppose you cannot just point directly to the cause and say "fix this", but if you could help me to debug it I'd most appreciate it. i.e. for starters I dont even know if it's purely proftpd configuration problem or can it be linux permissions problem or something else entirely? Thanks in advance

Best Answer

With the help of proftpd support forums, I figured this one.

UIDs and GUIDs in AuthUserFile must match one(s) of real Linux user(s) with the right ownership/permissions for the relevant FTP directories.

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Ubuntu – Proftpd on Ubuntu – Create directory permission denied (550 ) after upgrade to 9.10

Ok after some trial and error I found the solution.

I needed to add the commands XRMD and XMKD to those allowed by the user. They are described as X-Variants of the commands RMD and MKD and are apparently "often missing from a thorough configuration" according to http://www.castaglia.org/proftpd/doc/contrib/ProFTPD-mini-HOWTO-Limit.html

So perhaps somewhere in my system these commands are now being used instead.

The end of my config now reads:

<Directory /home/userftp/upload>
Umask 022 022
AllowOverwrite on
    <Limit READ>
        DenyAll
        </Limit>

        <Limit STOR CWD MKD RMD DELE XRMD XMKD>
        AllowAll
        </Limit>
</Directory>

Ubuntu – ProFTPD server – multiple ports, same IP address

There is passive and active mode in FTP server, for active mode you will need to open a port range. In active mode FTP server opens a random port for data transfer, then client connects to the random port. If your firewall block this port, then directory listing, and data transfer will fail.

In passive mode, client opens new port then tells the server to connect it for data transfer. Passive mode would not work with all routers, client may cannot open a port for data transer.

Solution: Open a port range (eg. 1500 to 2000), then configure your FTP server to use these ports.

http://slacksite.com/other/ftp.html

Best Answer

Related Solutions

Ubuntu – Proftpd on Ubuntu – Create directory permission denied (550 ) after upgrade to 9.10

Ubuntu – ProFTPD server – multiple ports, same IP address

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