On Fri, 30 Aug 1996, Mike Parsons wrote:
> Date: Fri, 30 Aug 1996 11:59:47 -0400
> From: Mike Parsons <mikeep03 @
Interpath .
com>
> To: Firewalls @
GreatCircle .
COM
> Subject: TN3270 and TN5250 through a firewall using OS/2 Clients
>
> What experiences have folks had with using the WARP Connect TN3270 and
> TN5250 clients to go through a proxy host? My experience has not been good.
> In both cases the connection attempt has failed with the client providing a
> message it was unable to shift into transparent mode.
>
> Why would a proxy written for Port 23 not be able to accomodate all forms of
> telnet?
Because TN3270 isn't standard. I've seen some clients do the up-front
negotiation in EBCDIC, and obviously a generic *nix proxy won't play that
game at all. On the other hand, it may be as simple as a termcap problem.
If you could sniff the link and figure out where it's failing in
negotiation, it'd be easier to trouble-shoot. Baring that, I guess
connecting to a telnetd that logs the negotiation may belp.
Paul
>
> Thanks in advance for your help.
>
>
-----------------------------------------------------------------------------
Paul D. Robertson "My statements in this message are personal opinions
proberts @
clark .
net which may have no basis whatsoever in fact."
PSB#9280
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