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Firewall issues with setting up vsftp server



I am attempting to set up an ftp server on an internal network. (All hosts are 192.168.1.*) I am using vsftp, but stumbling over an iptables related issue. Also, this is Fedora Core 3.

vsftp is running as a stand-alone daemon. I used the "security level" icon to permit ftp traffic on the server. At that point I CAN connect from a remote client to the ftp server. I can login properly. I can cd to a directory of choice. However, as soon as I try to download data (or even do an ls), I get a message of "entering passive mode" and then "no route to host" error message. This problem can be eliminated by going to /etc/rc.d/init.d and doing an "iptables stop", which turns off all firewall features. However as soon as I reactivate the iptables I once again get the "no route to host" message when I try to transfer data.

I am guessing that I am getting blocked by a closed port. I've done some research, and generally understand the concept, but don't understand how to get past what appears to be a closed port issue without opening up a large range of ports. While that may not be distasteful on my private network, it is not desirable if I eventually make this machine available to the outside world.

Any guidance would be appreciated.

Thanks...Terry


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