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Forum Home » Authentication, Kerberos, Active Directory » NetBIOS Name vs. DNS name
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Author Topic: NetBIOS Name vs. DNS name
Alex_Raj
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joined: 05/16/2006
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  posted on: 06/08/2006 08:19:54 PM    Edit  |   Quote  |   Report 
NetBIOS Name vs. DNS name

NetBIOS is an acronym for Network Basic Input/Output System.

A NetBIOS name is a 16-byte address that is used to identify a NetBIOS resource on the local area network (LAN).

It's importance is diminishing as TCP/IP becomes more and more popular. However, Windows 9x and Windows NT4 (and earlier) machines depend on NetBIOS for LAN communication. Furthermore, while Windows XP and Windows 2000 do not need NetBIOS to be installed for LAN communication, it is required if any of the clients are Windows 9x or NT4 machines.

WINS is similar to DNS: both systems will resolve a name into an IP address. DNS solves the general Internet naming problem, WINS is designed only for NetBIOS names.
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Alex_Raj
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  posted on: 06/08/2006 08:26:07 PM    Edit  |   Quote  |   Report 
Resolving NetBIOS Names with WINS
Here is the sequence of events for resolving NetBIOS names on Windows machines:

  • Check the NetBIOS name cache

  • Check the WINS server

  • Broadcast

  • Check the lmhosts file in %windir%\system32\drivers\etc

  • Query the hosts

  • Query the DNS server

  • Give up

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    Alex_Raj
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      posted on: 06/08/2006 08:34:01 PM    Edit  |   Quote  |   Report 
    Resolving DNS Names on Windows
    Here is the sequence of events for resolving DNS domain names on Windows machines:

  • Check the DNS name cache

  • Check the hosts file in %windir%\system32\drivers\etc.

  • Query the DNS server

  • Check the NetBIOS name cache

  • Query the WINS server

  • Broadcast across the LAN

  • Check the lmhosts file.

  • Give up

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