Page 981 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide

headers.

When the user logs on from the device, the authentication system
checks the user account for a registered device. It then verifies the

characteristics of the user’s device with the registered device. Even
though some of these characteristics change over time, this has proven
to be a successful device authentication method. Organizations
typically use third-party tools, such as the SecureAuth Identity
Provider (IdP), for device authentication.

As mentioned previously, many MDM systems use context-aware
authentication methods to identify devices. They typically work with

network access control (NAC) systems to check the health of the device
and grant or restrict access based on requirements configured within
the NAC system.

802.1x is another method used for device authentication. It can be
used for port-based authentication on some routers and switches.
Additionally, it is often used with wireless systems forcing users to log

on with an account before being granted access to a network. More
recently, some 802.1x solutions have been implemented with MDM
and/or NAC solutions to control access from mobile devices. If the
device or the user cannot authenticate through the 802.1x system, they
are not granted access to the network.

Service Authentication

Many services also require authentication, and they typically use a
username and password. A service account is simply a user account
that is created for a service instead of a person.

As an example, it’s common to create a service account for third-party
tools monitoring email in Microsoft Exchange Server. These third-
party tools typically need permission to scan all mailboxes looking for

spam, malware, potential data exfiltration attempts, and more.
Administrators typically create a Microsoft domain account and give
the account the necessary privileges to perform the tasks.

It’s common to set the properties of the account so that the password
never expires. For a regular user, you’d set the maximum age to