NET WHO Broadcasts Can Be Disabled to Reduce Traffic

SUMMARY

To allow more flexibility in reducing broadcast traffic, you can disable the NET WHO data collection feature on Microsoft LAN Manager server versions 2.1a and later.

To keep track of currently logged on users, the primary domain controller walks a list of them every 15 minutes, sending out a datagram to each name. The datagram is a multicast (NetBEUI) or broadcast (TCP/IP) packet directed to a specific name. On networks where broadcast traffic is a concern, (especially those using TCP/IP Extensions for LAN Manager), it may be worthwhile to disable this feature if it isn't needed for administrative purposes.

To disable NET WHO, add the following to LANMAN.INI on the primary domain controller:

   [netlogon]

      netwho=no 

Additional query words: 2.10a 2.1a 2.20 2.2

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