Hi all.
I have made a proxy server and nowthe users get the following error when they connect to an ftp site using internet explorer.

The error they get in a popup box: The folder'ftp://ftp.planet.nl/' is read-only because the proxy server is not set up to allow full access.

proxy servers can't handle uploads via ftp.

you can disable this popup in IE in the options where it says "enable ftp folder view" or something

If you need to upload you have to setup some NAT or forwarding on your firewall.

Ok, thanks.

Any idea on how to do this? Looks like a lot of work

This is only needed if you want to upload to ftp servers, if you only want to download via ftp just disable the folder view in IE.

do enable ftp forwarding on your proxy type...

echo 1 >/proc/sys/net/ipv4/ip_forward
/sbin/iptables -A FORWARD -s x.x.x.x/24 -d 0.0.0.0/0 -j ACCEPT
/sbin/iptables -p tcp -t NAT -A POSTROUTING -j SNAT -s x.x.x.x/24 -d 0.0.0.0/0 --dport 20:21 --to-source y.y.y.y
/sbin/iptables -p udp -t NAT -A POSTROUTING -j SNAT -s x.x.x.x/24 -d 0.0.0.0/0 --dport 20:21 --to-source y.y.y.y


where x.x.x.x is your network and 24 is your netmask.
and y.y.y.y is your outside ip address that the isp gave you.

Thanks, ill give it a try.

They have to upload for some sort of moneytransfering program.