I guess it depends on how it works...

Is it a client telneting in (command line) to a login shell, then invoking a
curses type informix application?  If it is something like that, where a
human is doing the authentication, then it will be no problem (replacing
telnetd with ssh)

If the client side is a program, then it is really opening some kind of
socket API, then you may indeed need to set up a port forward tunnelled
through ssh, as others have said.


On Tue, Jun 22, 2010 at 10:35 AM, patricia campbell <
[email protected]> wrote:

> I agree with Fabian, the issue is the Powerbuilder & Informix side it
> will probably be using telnet protocol (RFC854)
> http://www.faqs.org/rfcs/rfc854.html which differs from ssh protocol
> (RFC4542) http://www.ietf.org/rfc/rfc4252.txt  (Just to give you 2
> sites for RFCs :) )
>
> Tunneling is your best bet as neither client nor server end *needs* to
> be aware that anything is different.
>
> Tricia
>
> On Tue, Jun 22, 2010 at 7:53 AM, Fabian Rodriguez <[email protected]>
> wrote:
> > On 10-06-21 10:57 PM, Peter Silva wrote:
> >> You need to install an sshd server on the solaris box[..]
> >
> > SSH won't be a drop in replacement. It will accept connections on a
> > different port, with different prompts, etc. If the current client
> > relies on having the exact same prompts, for example, you'll need to
> > work around that.
> >
> > You could setup exactly what Peter suggests, but use it to tunnel the
> > existing telnet connection, essentially securing the existing link.
> > Using tunneling you'd still want/need to change IP/host, ports etc.
> >
> > If you can't touch the host environment such tunnel can be setup on a
> > gateway system or even on a cheap router (depending on how
> > secure/reliable you'd want that to be).
> >
> > Fabian
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