anonymous user

Definition of anonymous user in The Network Encyclopedia.

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What is an Anonymous User?

Any user who attempts to access network resources without providing a username or password.

Some Microsoft Windows NT applications like Microsoft Internet Information Services (IIS) can be configured to allow anonymous users to access their resources. This allows distrusted users from unsecure networks such as the Internet to access data that is made available for the public at large.

How it works

Access to network resources by anonymous users can be controlled by assigning permissions to a special anonymous user account. Windows NT then provides anonymous users access to resources by impersonating the user utilizing the anonymous user account.

When a user visits a web page withou a login, that's an anonymous user.