(7)Callback
“Callback” is a system in which the user connects to the authentication
server of a company network from outside the company. The line is then
severed and the authentication server calls back the user. It can be used to
verify whether the caller is a valid user by configuring the callback system
to deny network access to anyone whose number has not been registered to
the system. It can also be used to reduce communications costs for users.
Company network
Server
Telephone network
Access request
A1
Call from 06-1234-222X
3
User A1 : 06-1234-222X
User A2 : 03-8888-999X
Deny access if not
a registered number
Technology element
Access
permission
Access
request
Call back the
registered
phone number
A “RAS” refers to a dial-up connection
service for computers in a remote location, using telephone lines or ISDN
lines. It allows users to take advantage
of resources on company networks by
connecting to a company authentication
server from outside the company.
Abbreviation for “Remote Access Service.”
Chapter 9
Authentication
server
Server
Reference
RAS
A2
Call from 03-4444-999X
Types of physical security measures
The types of physical security measures are summarized below.
(1)Biometric authentication
“Biometric authentication” is a matching technology that is used for
identification, and is based on physical characteristics that are unique to
each person such as fingerprints or veins.
The advantages of identification based on physical characteristics are
strong security and inability to forget the identification. Currently, research
is being conducted on a variety of technologies, which is gradually making
it possible to implement biometric authentication as technical hurdles, and
clear cost issues. However, there are various outstanding issues such as
support for persons who cannot use biometric authentication due to illness
or injury. In addition, there are other issues dealing with secular changes in
physical characteristics, and management of biometric information that has
been previously registered.
Reference
Biometric authentication
“Biometric authentication” was coined
from the words “biology” and “metrics.”
Reference
Secular change
“Secular change” refers to the changes
that occur over the passage of time.
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