Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!xylogics!griff
From: griff@Xylogics.COM (Scott Griffiths)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Making terminal servers just like internal serial ports
Message-ID: <10978@xenna.Xylogics.COM>
Date: 15 Mar 91 15:39:07 GMT
References: <1991Mar15.013603.18407@johnny5.uucp>
Reply-To: griff@Xylogics.COM (Scott Griffiths)
Organization: Xylogics, Inc., Burlington MA
Lines: 25


I tried to respond to Joe Garvey directly but the mail kept bouncing so I
decided to post this here.

For some time now, the Xylogics family of terminal servers has provided a host
based utility called rtelnet (reverse telnet). This program allows the user 
to specify a /dev/device_name entry for use with applications which are used 
to talking to /dev/tty types of devices. A data path is set up between 
the host and a specified port on the terminal server so these applications 
work without modification. The most often used applications are for printers 
and modems on the network (lpd, cu, tip and uucp).

The utility actually works as follows. A free pty is found and reserved for
use (by opening the master side). The user specified device name is linked to 
the corresponding slave device. Finally, a telnet connection is opened between
the host and the specified terminal server port.

Please let me know if you need any more information on this capability.

Scott Griffiths					phone: (617) 272-8140
Xylogics Annex Technical Support		email: griff@xylogics.com
-- 

Scott Griffiths					phone: (617) 272-8140
Xylogics Annex Technical Support		email: griff@xylogics.com