Re: [cobalt-users] Raq550 FTP client problem

["Oleg Volkov" <voleg@xxxxxxxxxxxx>]

> I can connect and logon fine (through a scrreening router) from the RaQ550
> to the RaQ3 but when I try to do a "get", I get a message saying: "Entering
> passive mode" and the FTP clinet hangs. Coing from the other 
> direction, everything works fine.
> 

Get RFC for FTP to learn more about this strange and antique
protocol.

In brief: there is one TCP/IP connection called control
connection (port 21 - FTP). Using this connection both peers
agree about another channel, called data. It may come
on random free port that both agree on it. This agreement
cover by commands PASV and PORT. What mean what, I've
already forgot, because it was unimportant for me - check in RFC.

About your problem:
1. some kind of firewall resides between two boxes, that
does not understand FTP, or suppose to do FTP only in one direction -
from IN to OUT.

2. You trying so called Third party FTP. What meen you open
control connection to both computers from third one. After that
you trying to establish data connection between two of them.
This option open security hole, and closed by default on many
FTP servers for years. It may be opened, however, if you insist.

--
Oleg Volkov
System Administrator
SHUNRA Software Ltd.
http://www.shunra.com

+972-9-7643743/93121(w)
+972-51-601914(m)