While there
is nothing built into Windows Server 2008 specifically to handle them, drivers and the
implementing technology are readily available. USB plug-in fingerprint scanners and
their software can be purchased for less than $50. Other devices can cost several hundred
to several thousand dollars for a face scanner. In the next few years, these devices will be
everywhere, so, depending on your needs, you may want to keep them in mind.
528 Microsoft Windows Server 2008: A Beginner??™s Guide
Certificate Authentication
If you want to bring users into a network over the Internet, but you are concerned that
sending usernames and passwords in that public way might compromise them, then
you can replace them with a digital certificate. A digital certificate (or just ???certificate???) is
issued by a certification authority (CA), who digitally signs it and says that the bearer is
who he or she claims to be, or that an object and sender are as represented. There are both
private and public CAs. An organization can be its own private CA and issue certificates
to its employees, vendors, and/or customers, so that those people can be authenticated
when they try to enter the organization??™s network. Also, a well-trusted public CA, such
as VeriSign (http://www.verisign.com/), can issue a certificate to a person, object, organization,
or web site. A person or organization receiving the certificate, if they trust the
CA, can be reasonably certain that the presenter is as represented.
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