DNS server NIC settings

Hi,
I just acquired a new small business client with a Windows 2003 server and 8 XP / Windows 7 clients. The server is running DNS.

This morning while troubleshooting some DNS 4004 & 4015 errors in the Events Viewer, I noticed that on the NIC Authentication tab, "Enable IEEE 802.1x…" and "Authenticate as computer…" are selected. Other 2003 DNS servers I maintain for other networks do not have these features enabled, including one I myself setup using the Server Roles wizard. Should these settings be left enabled, or turned off. What is there purpose? I am in the process of getting familiar with this network. This server holds some data and hosts a business application, nothing unusual. Thanks for the advice.
westoneAsked:
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Chretien TALOMConnect With a Mentor System Engineer MessagingCommented:
Hello,

I believe that's due to security issue or some features which are present on the server where it's enabled and no on others. For more explaination you can look to this links. Thanks
http://technet.microsoft.com/en-us/library/bb727020.aspx

Regards and let us know

Chretien
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westoneAuthor Commented:
Yes, I've read elsewhere that on Server 2003 it is enabled by default, but not on all versions of the Server OS.
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