The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.

NetBIOS protection

An option on the Policy Manager that blocks all communication from computers located outside a client’s local subnet range. NetBIOS traffic is blocked on UDP ports 88, 137, and 138 and TCP ports 135, 139, 445, and 1026. See also subnet.