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Force ProFTPD to listen on only one IP

Sun, 02/24/2008 - 00:10 — sandip

It's not quite as clean as the socket binding under Apache but the principle works something like this.

  1. In Standalone mode, to listen on the primary IP of a host use the SocketBindTight directive.

    In "/etc/proftpd.conf":

    SocketBindTight                 on
  2. To listen on a interfaces which are not the primary host interface, use the SocketBindTight directive, place your server configuration in a block and use "Port 0" for the main host configuration and and "Port 21" inside the VirtualHost block.

    Port                            0
    SocketBindTight                 on
    <VirtualHost xxx.xxx.xxx.xxx>
        &nbsp;   Port 21
        &nbsp;   DefaultRoot   &nbsp;    &nbsp;    ~
        &nbsp;   AllowOverwrite  &nbsp;    &nbsp;  on
        &nbsp;   Umask    &nbsp;    &nbsp;    &nbsp;    002
    </VirtualHost>

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Fri, 03/18/2011 - 06:17 — Anonymous Very helpful

We have spent days of drinking and thinking what could be the reason of our FTP not working on the alias'ed IP address.

Setting default port to 0 fixed the issue!

Thanks to the author of this VERY nice tutorial!

Thu, 01/14/2010 - 20:14 — Anonymous Thanks!

Helped me a lot..
When changed from port 21 to 2100 (for security) the server decided to shout on the logs:
unable to listen on 0.0.0.0#21: Address already in use

The parameter fixed the issue :-)

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