FTP SYST command

[vvlier2]

Hello,

When the FTP client issue a SYST command before the authentication (USER command), the connection is closed with the message:

Code:

421 Service not available, remote server has closed connection

Here is the extract of the FTP proxy server.log:

Code:

06/21/04 08:36:03   127.0.0.1   Administrator   0000000009   Error:   Caught socket exception in CFTPSession::OnRead() GODDAM! {Thd 1576} [socket #FFFFFFFF] - terminating
06/21/04 08:36:03   127.0.0.1   Administrator   0000000009   Traffic    38   6   0   0   3s
06/21/04 08:36:03   127.0.0.1   Administrator   0000000009   Terminated exit code 1

My problem is that the ftp client of Solaris 9 always issue the SYST command when using the -n switch. It doesn't occur with ftp client of Solaris 8.

I tried this with Wingate 5.xx and the 6.0 beta, with the same result.

Could you help me?

[MattP]

Hi,

We tested this here using FTP from the command line and the syst command was successfully passed through the WinGate FTP proxy. We're not sure why this is not working with Solaris 9, was the command issued by Solaris 8?

Matt

[vvlier2]

Hi,

We tested this here using FTP from the command line and the syst command was successfully passed through the WinGate FTP proxy. We're not sure why this is not working with Solaris 9, was the command issued by Solaris 8?

Matt

You may reproduce the probmel with ftp in a dos prompt:

Code:

C:\>ftp.exe
ftp> o 127.0.0.1
Connected to 127.0.0.1.
220 WinGate Engine FTP Gateway ready
User (127.0.0.1:(none)):
500 Bad username format - format is user@host:port
Login failed.
ftp> quote SYST
Connection closed by remote host.
ftp> o 127.0.0.1
Connected to 127.0.0.1.
220 WinGate Engine FTP Gateway ready
User (127.0.0.1:(none)): username@ip:port
331 User name okay, Need password.
Password:
230- ARES FTP Server - Log & Zipps Xloads
230- This site is IP protected - Be Carreful !
230 User logged in, proceed.
ftp> quote SYST
215 WIN32 (NT) (WAR-FTPD 1.65 Copyright (c) 1996, 1997 by jgaa)
ftp>

As you can see, if you are not connected to a distant site, the SYST command reset the connection to the gateway. If you are connected to some site, the command succeed.

This SYST command is only issued by the Solaris 9 ftp client when using the -n switch. It seems to be a new "feature" because with Solaris 8 the command was not used.

[buggzy]

C:\>ftp.exe
ftp> o 127.0.0.1
Connected to 127.0.0.1.
220 WinGate Engine FTP Gateway ready
User (127.0.0.1:(none)):
500 Bad username format - format is user@host:port
Login failed.
ftp> quote SYST
Connection closed by remote host

- Doctor, I'm doing like that and I'm hurt!
- Just don't do like that! ;-)

Do you really need answer to SYST command from the ftp proxy server while it isn't connected anywhere?

[genie]

There was a bug in WG FTP handler - fixed now.