Article ID: 226107 - Last Review: February 25, 2007 - Revision: 3.2 Description of the Registry Entries for the Telnet Server ServiceThis article was previously published under Q226107 IMPORTANT: This article contains information about modifying the registry. Before you
modify the registry, make sure to back it up and make sure that you understand how to restore
the registry if a problem occurs. For information about how to back up, restore, and edit the
registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986
(http://support.microsoft.com/kb/256986/EN-US/
)
Description of the Microsoft Windows Registry
SUMMARY
This article describes the registry entries associated with the Windows 2000 Telnet Server service. For information about how to use the Telnet Server service, please see the following article in the Microsoft Knowledge Base: 225233
(http://support.microsoft.com/kb/225233/EN-US/
)
Description of the Telnet Server Service Administration Tool
MORE INFORMATIONWARNING: If you use Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee that you can solve
problems that result from using Registry Editor incorrectly. Use Registry Editor at your own
risk. The Telnet Server service values are located in the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\TelnetServer\1.0
The possible Telnet Server registry values and data types include:
Name Data type Values
--------------------------------------------------------------------------
AltKeyMapping REG_DWORD 0x00: Press CTRL+A.
This key combination emulates
the ALT key. This enables you to
send an ALT combination to
programs running on SFU Telnet
servers.
0x19: Press CTRL+Z.
This key combination emulates
the ALT key. This enables you to
send an ALT combination to
programs running on SFU Telnet
servers.
DefaultDomain REG_EXPAND_SZ Uses default Windows domain for
login authentication.
DefaultShell REG_EXPAND_SZ Defines the full path of
the shell or command
interpreter that runs
when a Telnet user logs
on. The default is Windows NT
Command Prompt (Cmd.exe), but can
be set to a UNIX shell.
LoginScript REG_EXPAND_SZ Sets the full path of a batch
file when a Telnet user logs on.
This is similar to a global
.cshrc file or profile in UNIX.
MaxConnections REG_DWORD Applies only if you
purchase a license through
Services for UNIX. In Windows
2000, the Telnet Server service
has a hard coded limit of two
simultaneous connections.
MaxFailedLogins REG_DWORD Determines the number of
unsuccessful logons before a user
is disconnected. (default is 3)
NTLM REG_DWORD 0x00: Disables Windows NT
LAN Manager (NTLM)
authentication.
0x01: Attempts NTLM first, and
then uses clear text
authentication.
0x02: Uses NTLM authentication
only.
TelnetPort REG_DWORD Defines the Transmission Control
Protocol (TCP) port for Telnet
connections. (default is 23)
TermCap REG_EXPAND_SZ Sets the full path to the
"terminal capabilities" file.
This file is similar to a UNIX
file, which is used to define
standard layouts and key mappings
for common emulation types (for
example, VT52, VT100, and ANSI).
NumThreadsPerProcessor REG_EXPAND_SZ Determines the number of threads
assigned to each processor for
execution. The default value is
set to 10. The minimum value
is 2.
HKEY_LOCAL_MACHINE\Software\Microsoft\TelnetServer\1.0\Performance
If you change any of these registry values, you have to stop and then restart the Telnet Server service.
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