System Roles

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System Roles

Certain predefined roles must be addressed with certain names. The computer that has the resource you are trying to access may be referred to as the host computer. While you are trying to access its resources, this computer is also playing the role of a server because it is providing a service: the sharing of its resources. The person trying to access the host computer is in the role of a client. Remember, a computer may play the roles of both client and server at once. If, for example, you are trying to access a printer on a remote computer while someone is utilizing your shared CD-ROM, you are then both client and server, because you are both sharing a resource and accessing a remote one.

Any time a resource—drive, printer, and so forth—is shared, it will appear on the browse list, which is available to everyone. Even if you have not been given permission to use the resource, it will still appear on the list you see. This is because it is an overall list of what network resources are available, not just the network resources that are available to you. There are ways of limiting access to the resource to the specific clients that you want, but there is not a way to just have the resources you have access to appear in your list, because your list is not specific to you, it is the entire list for either your workgroup, domain, or network. You limit access by setting permissions directly on the resource you are sharing.

You may have noticed that sometimes the browse list appears incomplete, or things are on the list that you cannot access, and have been given the correct permissions. If you do not have enough permissions to access this network resource, even though it appears in your browse list, you will still be denied access. The issues of proper permissions but no access and not appearing on the browse list at all happen because there is a delay on updating the browse list you are accessing. What happens is the resource you attempt to access is either not available anymore (which results in you being denied access to a resource you had previously been allowed to access), or does not appear in the browse list. Browse list timing issues are covered later in this section.

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