"Access control" means that you control who has access to
certain things - so an access control software is software that
helps you achieve that.
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You can control the access to a system by buying or downloading
certain programs. An example of a program that gives you the
ability to control the access to a system is Network Access
Control.
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Access Control list is the audit settings and security settings
of objects.
whereas Access Control Entry is the entry within the ACL.