Auditing detecting anonymous user?

From: Ivan de Sousa (ivan@netcabo.pt)
Date: 05/24/02 

From: "Ivan de Sousa" <ivan@netcabo.pt>
Date: Fri, 24 May 2002 14:08:37 -0700

Hi! Auditing in a windows 2000 member server in a NT 4
domain keeps logging events from an anomymous user, every
other user is clearly identified except for this one: "NT
Authority\anonymous". Any idea of what this means?

Thanks in advance

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