KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q322846: Telnet Client Does Not Send CRLF When Expected

Article: Q322846
Product(s): Microsoft Windows NT
Version(s): 2.2 OEM Only,2.3 OEM Only,3.0
Operating System(s): 
Keyword(s): kbtool
Last Modified: 03-JUN-2002

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows Services for UNIX, versions 2.2 OEM Only, 2.3 OEM Only, 3.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

After you set the Telnet Client to send CRLF (Carriage Return Line Feed), it
sends only CR.

WORKAROUND
==========

To resolve this issue, set the Telnet Client to send CRLF after you establish a
Telnet session. To do this, follow these steps:

1. Start the Telnet Client.

2. Open a Telnet session to a Telnet server.

3. Press CTRL+] to switch to command mode.

4. Type "set crlf" (without the quotation marks).

5. Press ENTER to return to session mode.

Now the Telnet Client will send both CR and LF to the server. However, you will
not be able to open another session in the present Telnet session.

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products that are
listed at the beginning of this article.

MORE INFORMATION
================

Until the Telnet connection is established (that is, until the authentication is
over), the Telnet session requires only CR, irrespective of the CRLF setting.

If you set the CRLF option before authentication, the Telnet Client will send LFs
when they are not appropriate. For example, after you type a user name and press
ENTER, the following sequence is sent:

  Username+CR+LF

The following sequence should be sent:

  Username+CR

The result is that the password now becomes "LF+password", which causes the logon
process to be unsuccessful.

Additional query words: solar coaster solarcoaster interix

======================================================================
Keywords          : kbtool 
Technology        : kbWinServiceUNIXSearch kbWinServiceUNIX300 kbWinServiceUNIX220OEM
Version           : :2.2 OEM Only,2.3 OEM Only,3.0
Issue type        : kbprb

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.