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FTP connection dies midway through transfer

Discussion in 'Plesk for Linux - 8.x and Older' started by cmaxwell, Dec 21, 2005.

  1. cmaxwell

    cmaxwell Regular Pleskian

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    One of our servers is having a problem with FTP. It begins file uploads and after about 1MB of data transfer the connection drops.

    If we disable the iptables firewall then it works fine.

    I set the passive ports in /etc/proftpd.conf:

    PassivePorts 49152 65534

    And opened the ports in the firewall:

    /sbin/iptables -A INPUT -p tcp -m tcp --dport 49152:65534 --syn -j ACCEPT

    Other than this we don't have any other customisations on the firewall.

    Any ideas? I'm guessing it's a problem with the firewall but find it very strange that it starts the file transfer then stops.

    Thanks.

    - Chris
     
  2. section31

    section31 Guest

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    Does anyone have a sample iptables file that works well with ftp.. I'm having similar issues. Just a directory listing via ftp takes like 5 seconds with firewall on.
     
  3. cmaxwell

    cmaxwell Regular Pleskian

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    We found that this problem was caused by the first rule in the firewall:

    -A INPUT -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with tcp-reset

    Try removing that rule from your firewall ruleset and it should start working.

    - Chris
     
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