WinGate FTP protocol incompatibility

[Dvorkin]

Hello!

I'm using Pure-FTPd FTP server for my hosting clients.
One of my clients use the WinGate 5.x.x and found some strange things:
1) when they are using HTTP proxy while downloading binary files into my server, the files corrupts during the transfer. They are exactly using binary and passive transfer mode;
2) when they are using transparent FTP proxy to my FTP server, they simply can't connect. After the connect my FTP server usually respond with:
220---------- Welcome to Pure-FTPd ----------
220-You are user number 1 of 50 allowed.
220-Local time is now 15:42. Server port: 21.
220-This is a private system - No anonymous login
220 You will be disconnected after 15 minutes of inactivity.
, but WinGate can't understand "220-" format of the messages (it is the RFC-compilant format for the multiple-lines messages in FTP protocol). It stops and can't send username to my FTP server.

My FTP server is great. It is full RFC-compilant. It is very secure. I won't change it.
Can you correct the problem?

WBR, Dvorkin

[genie]

Hi,

What particular problem your FTP server had with this 220 reply? Wingate FTP proxy is RFC-compliant and we did not have many problems reported about not handling replies correctly. Can you be a bit more detailed about the problem you encountered?

[mooo]

hmm..

"220 WinGate Engine FTP Gateway ready
AUTH TLS
Failed SSL/TLS negotiation, disconnected
Connection failed (Connection lost)"

[adrien]

hmmmm, I never saw an AUTH command in RFC 791... did FTP get a breath of new life and TLS support?

We support TLS for POP3, and SMTP... should be easy enough for FTP if there is an RFC for it.

Adrien

[mooo]

hehe. TLS was been available for a very long time, and is covered in
RFC-2246 and and the extensions to the FTP protocol are defined by RFC-2228.

almost all ftp clients support TLS/SSL (flashfxp, cuteftp, smartftp, pftp)
and many ftpd's support it.

would be nice to have it in v6.0 of wingate, there are the rfc's :)

[mooo]

hmm.. while you're at it, also browse through

* RFC 2389 (Feature negotiation mechanism for the File Transfer Protocol)
* RFC 2428 (FTP Extensions for IPv6 and NATs)

[mooo]

adrien, any chance for it to be included in v6.0 ?

[mooo]

bump?

[adrien]

Hi

thanks for the RFC's.. I'll have a look.

Also I am interested in the problem you are having with people using FTP through a HTTP proxy. In this case, we always use PASV mode. Is that likely to be a problem?

I haven't tested HTTP PUT for FTP via the WWW Proxy lately... sounds ugly!

Adrien