Re: FTP-applications (or a good FTP-proxy)?

Henrik Nordstrom wrote:

> Mario Camou wrote:
>
> > If you're running Linux on your firewall, the Linux kernel has
> > an FTP proxy.
>
> Technically what's in the Linux kernel is not a proxy, it is packet
> level IP masquerading / NAT with packet rewriting for FTP and some other
> protocols.
>
> A proxy generally requires the client to know about the proxy.
>
> ---
> Henrik Nordstrom
> Spare time Squid hacker

Precisely, the Linux kernel *HAS* a Proxy.:

# insmod ip_masq_ftp

Then on your client:

% ftp firewall
Name (firewall:user) : anonymous@sunsite.unc.edu

And it connects you as anonymous to sunsite.unc.edu

In this case, the client *HAS* to know about the proxy to use it! To do FTP's,
you either:

1. Connect directly to the server and use Passive mode (unsupported by some
clients and servers).
2. Connect to the firewall's proxy
3. Use squid or some other proxy with ftp:// URL's

-Mario.
Received on Thu Oct 22 1998 - 15:06:46 MDT