Re: FTP logon fail

Bryan Armstrong <bryan.armstrong-6tN4nzCoH/[email protected]>
Newsgroups gmane.comp.hardware.microcontrollers.tini
Message-ID <[email protected]>
Arrizabalaga, Saioa wrote:
> Hello all,
> 
> We have succesfully got the PPP_UP event with no problem, after having
> followed the steps mentioned in
> http://lists.dalsemi.com/maillists/tini/2003-May/026191.html
> about connecting to GPRS, and our application works OK, but we have found
> some problems when using the TINI´s FTPServer.
> 
> We have tried with several FTPClients in our PC, but with no success. We
> can connect to the FTPServer only if we use the Ethernet IP address of
> TINI. When we try to connect to the FTPServer with GPRS IP address, we get
> this response:
> 
> connecting to 213.4.184.126:21
> Connected to 213.4.184.126 port 21
> 220 Welcome to slush.  (Version 1.11)  Ready for user login.
> USER root             ------->>>>> It spends a lot of time just here
> ! Receive error: Blocking call cancelled
> 
> ! Logon failure, so quitting
> 
> Any ideas about why this can happen?

1. Verify that ping works
2. Verify that telnet works

If 1 and 2 do not work, network routing is the problem.

If 1 and 2 DO WORK, and ftp does not, I suspect that you are running 
your FTP client behind a NAT firewall and the TINI cannot connect back 
to your machine for the data backchannel.  (this is where the long pause 
happens)  You could also be firewalling incoming connections.  You might 
want to try using passive FTP.

-- 
--
Bryan Armstrong
bryan.armstrong-6tN4nzCoH/[email protected]


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