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How do I turn off Netbios Options 44 - 47 in a Sophos box running DCHP

We use our Sophos Firewalls for DHCP and everyone is getting NetBIOS from DHCP, and this is becoming problematic for us. In a windows server, there is an option to disable NetBIOS option 44, but I do not see any of the options for 44 to be disabled.

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0 Greg CT over 8 years ago

You should be able to do this with a vendor specific option 43. See the following for insights:

https://community.sophos.com/kb/en-us/123529

https://forum.fortinet.com/tm.aspx?m=142310

https://blogs.technet.microsoft.com/troubleshooting_walk_through/2013/11/01/what-comes-with-option-43-and-configuring-in-dhcp/

https://msdn.microsoft.com/en-us/library/cc227276.aspx
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0 Greg CT over 8 years ago

You should be able to do this with a vendor specific option 43. See the following for insights:

https://community.sophos.com/kb/en-us/123529

https://forum.fortinet.com/tm.aspx?m=142310

https://blogs.technet.microsoft.com/troubleshooting_walk_through/2013/11/01/what-comes-with-option-43-and-configuring-in-dhcp/

https://msdn.microsoft.com/en-us/library/cc227276.aspx
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