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DOCUMENT:Q105997 03-NOV-1993 [W_NT]
TITLE :Differences Between the HOSTS and LMHOSTS Files in Windows NT
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
----------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
----------------------------------------------------------------------
SUMMARY
=======
In Windows NT, the HOSTS file is for TCP/IP utilities, and the LMHOSTS
file is for LAN Manager NET utilities. If you cannot PING another
computer (using a friendly name), check the HOSTS file. If you cannot
NET VIEW a server using only the TCP/IP protocol, check the LMHOSTS
file.
MORE INFORMATION
================
The HOSTS file is used when you do something with the TCP/IP
utilities, such as PING, FTP, and TELNET. You can find the HOSTS file
in the winnt\system32\drivers\etc directory. The format of the file is
the following:
IP Address Friendly Name
130.25.25.87 jsmith_nt # Remarks are denoted with a #.
With an entry like this in the HOSTS file, you could PING jsmith
instead of typing out the whole IP address (ping 130.25.25.87). This
file is NOT dynamic, so you need to add entries manually.
The LMHOSTS file is for LAN Manager name resolution with the TCP/IP
protocol. The file is similar in format to the HOSTS file, but its
function is to resolve IP addresses for a server that is not on the
local subnet (the same wire). So, if you type the following
NET VIEW \\JSMITH_NT
and JSMITH_NT is on a different subnet, you will receive a "Server not
Found" error message. If you are on a different subnet, edit your
LMHOSTS file (in the same directory as the HOSTS file) to read as
follows:
IP Address Friendly Name
130.25.25.87 jsmith_nt
So when you type "NET VIEW \\JSMITH_NT" (without the quotation marks),
the LMHOSTS file tells Windows NT to replace the "\\jsmith_nt" with
the IP address to resolve where the server is.
For additional information on the LMHOSTS file in Windows NT, query on
the following words in the Microsoft Knowledge Base:
lmhosts and windows and nt
Additional reference words: 3.10
KBCategory:
KBSubcategory: tpip netsrv
=============================================================================
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.
Copyright Microsoft Corporation 1993.