Overview and highlights of Active Directory service for Windows 2000/2003
- The Active Directory service is only available in a domain environment (a domain is a logical groupings of servers and other network resources under a single domain name) and requires a computer running Windows 2000 Server or Windows 2003 Server configured as the domain controller (which stores a complete replica of the domain directory). Modifications made to Active Directory can change the configuration of a workstation running Windows XP Professional. Active Directory uses a catalog service called Global Catalog. This allows all the domains to act as one entity when searching for objects (such as files, printers, or users) across the enterprise (meaning searching outside of the domain). Another topic is the Active Directory schema. The schema defines objects that can be stored in Active Directory (basically, a list of definitions that determines the kinds of objects that can be stored in A.D.). Active Directory greatly simplifies administering a network by providing a single point of administration for all objects that you may need to get to to administer. Some of the concepts in Active Directory are listed here: Trees ? a tree is a grouping or arrangement of one or more Windows 2000/2003 domains that share a contiguous namespace (contiguous namespace means the name of the child object in an object hierarchy always contains the name of the parent domain). Forests ? a forest is a grouping or arrangement of one or more domain trees that form a disjointed namespace (disjointed namespace means the names of the parent object and some of its other child objects are not directly related). Sites ? a site is a combination of one or more IP subnets connected by a reliable, fast link to localize as much network traffic as possible; sites contain only computer objects and connection objects. The last concept of Active Directory I will cover is GUID, which stands for Globally Unique Identifier. As you may or may not know, every object in Active Directory is identified by a name that contains sufficient information for a client to retrieve it when needed. A GUID is a 128-bit number that is guaranteed to be unique, and GUID?s are assigned to objects when they are created.
CYBER-WAR - The New Terror
As the world changes and advances so does terrorism. In the video we learned about what the United States is doing to counteract cyber-terrorism. Richard Clark was instrumental in calling to attention some of the glaring flaws that our security lacked when dealing with cyberspace, but there is still much to be done to completely protect out internet infrastructure from not only hackers and virus creators, but actual terrorists seeking a way to bring harm and chaos to our country. It was a good educational video that covered many areas without being overwhelming or spreading a sense of fear to the audience. I give it one thumbs-up. Richard Clark is the man!
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