telnet (client access or symtrax) to another as400 via internet

We have an as400 (with a private address) in our n/w , which is protected
by a firewall(with a public address). There is another as400 in another n/w
with the same config. We wanted to use client access or another telnet
client, e.g Symtrax to telnet to the other as400. After resolving all
firewalling and connexion issues, we get the other as400 signon screen.
(i,e we sign on to our as400 and then telnet the address of the firewall on
the other n/w. There the firewall prompts for the ip address (private) of
the other as400)
If we use Client access, we note that the cursor positions itself one
character before the user name input field. However it seems that whatever
we type (which by the way would appear in small letters if the keyboard is
in this mode) is not being correctly received by the other as400. On the
password field, the input is not masked.
If we use Syxtrax as the telnet client, we get the signon screen. But only
the 'User Name' appears. Following that there is a continuous line up to
the bottom of the screen. Similarly, input is not processed correctly .

Any idea anyone?
Thanks & regards


Email : dahkow@xxxxxxxxxxxxx