DOCUMENT:Q130289  13-JUN-2001  [sna]
TITLE   :TN3270 Errors with Telnet Daemon Installed
PRODUCT :Microsoft SNA Server
PROD/VER:WINDOWS:2.1,2.11,2.11SP1,2.11SP2,3.0,3.0SP1,3.0SP2,3.0SP3,4.0
OPER/SYS:
KEYWORDS:kb3rdparty kbinterop kbnetwork kbsetup kbsna211sp1 kbsna211sp2 kbsna300sp1 kbsna300sp2

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The information in this article applies to:

 - Microsoft SNA Server, versions 2.1, 2.11, 2.11 SP1, 2.11 SP2, 3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 4.0 
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SUMMARY
=======

If you have installed both a telnet daemon and the SNA Server TN3270 service on
a computer running SNA Server , the following error message may appear:

   Could not start the TN3270 service on \\servername
   Error 2140: An internal windows NT error occurred

The following events are recorded in the system log:

   Event 102:   TN3270 Service initialization completed by initialization

   error.

   Explanation: TN3270 Service initialization failed.

   Event 205:   Windows Sockets API call BIND for port 23 failed with

   return code WSAEADDRINUSE.

   Explanation: Port 23 is in use by another Windows NT process.

If the TN3270 Server Service is started before your Telnet daemon, you encounter
the same problem with a different error message:

   Could not start "Telnet Daemon name" server service on \\servername
   error 1067: the process terminated unexpectedly.

The following events are recorded in the system log:

   Event 6553:  Telnet daemon name
   Description: Failed to initialize the "telnet" tcp service

   Event 6553:  Telnet Daemon name
   Description: Could not create service: telnet; error code 10048

CAUSE
=====

By default, both services attempt to initialize port 23 as the default port for
their services.

RESOLUTION
==========

If you are running both the TN3270 Server service and a Telnet Daemon service,
create a separate entry for both services in the following file:

   %systemroot%\system32\drivers\etc\services

The service name should be TN3270. You must specify unique port numbers for both
the Telnet and TN3270 Service entries.

For example, after you edit the SERVICES file it might read:

   # Copyright (c) 1993-1994 Microsoft Corp.
   #
   # This file contains port numbers for well-known services as defined by
   # RFC 1060 (Assigned Numbers).
   #
   # Format:
   #
   # <service name>  <port number>/<protocol>  [aliases...]   [#<comment>]
   #

   echo                7/tcp
   echo                7/udp
   discard             9/tcp    sink null
   discard             9/udp    sink null
   systat             11/tcp
   systat             11/tcp    users
   daytime            13/tcp
   daytime            13/udp
   netstat            15/tcp
   qotd               17/tcp    quote
   qotd               17/udp    quote
   chargen            19/tcp    ttytst source
   chargen            19/udp    ttytst source
   ftp-data           20/tcp
   ftp                21/tcp
   telnet             23/tcp
   tn3270             24/tcp
   smtp               25/tcp    mail
   time               37/tcp    timserver
   time               37/udp    timserver
   rlp                39/udp    resource      # resource location
   name               42/tcp    nameserver
   name               42/udp    nameserver
   whois              43/tcp    nicname       # usually to sri-nic
   domain             53/tcp    nameserver    # name-domain server
   domain             53/udp    nameserver
   nameserver         53/tcp    domain        # name-domain server

NOTE: The new entry begins with tn3270.

Additional query words: prodnt event viewer prodsna

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Keywords          : kb3rdparty kbinterop kbnetwork kbsetup kbsna211sp1 kbsna211sp2 kbsna300sp1 kbsna300sp2 kbsna300sp3 sna4 kbsna400sp1 
Technology        : kbAudDeveloper kbSNAServSearch kbSNAServ300 kbSNAServ211 kbSNAServ400 kbSNAServ210 kbSNAServ211SP1 kbSNAServ211SP2 kbSNAServ300SP3 kbSNAServ300SP1 kbSNAServ300SP2
Version           : WINDOWS:2.1,2.11,2.11SP1,2.11SP2,3.0,3.0SP1,3.0SP2,3.0SP3,4.0

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