On Thu, Dec 14, 2000 at 05:30:32PM +0100, patrice.valentin@chq.alstom.com wrote:
Hi,
Hi!
i have to create a two levels ftp proxy, the nearer from the ISP is the top level proxy, and i want that another proxy can send request to the top level, so my question is can ftp-proxy be a proxy of an another ftp-proxy ?
Yes.
See also
ftp://ftp.suse.com/pub/projects/proxy-suite/src/TRANSPARENT_PROXY.txt
Does the ISP proxy transparent proxying for all FTP requests
(i.e. is this also a SuSE ftp-proxy) ?
If yes, you can use the transparent mode feature of the ftp-proxy
(on your internet gateway) and redirect all port 21 requests,
that are going from your internal networks into the internet
to your local ftp-proxy. The proxy checks, where the client
is wanted to go and trys to connect to. Because your ISP does
also transparent proxying, the connection request of your
proxy will also be redirected to the proxy of your ISP and
this proxy does the real connect to the ftp server.
You can combine this with the AllowMagicUser feature.
If you ISP does not use transparent proxying for FTP, you have
to go a different way. You have to disable AllowMagicUser and
AllowTransProxy in your proxy and set the proxy of your ISP in
DestinationAddress.
If you now redirect all your client requests to port 21 in the
internet to the proxy, it will allways connect to the proxy
of your ISP and this proxy connects you to the FTP serever.
In most cases you have to use "extended" FTP commands on the
ISP ftp-proxy using this way.
Our proxy simply acts a FTP-Server with its clients and like
normal FTP client to the FTP Server and does not support any
"extended" (propertary) FTP commans except of the interpretation
of the USER command if AllowMagicUser is enabled.
So it makes no difference, if your clients connects to the
proxy of your ISP or a SuSE ftp-proxy.
Gruesse,
Marius Tomaschewski