Specifications

Basic Concepts
2
Chapter 1 - Getting Started
License Codes
SentinelLM captures your license rights in electronic form. These are stored as
digital data called a license code. The license code indicates the maximum num-
ber of concurrent users of the application, on which computers it can be run, and
the license expiration date, if there is one. License codes are stored in a file that
is accessible to the SentinelLM software called the license file. Multiple license
codes may be stored in a single license file.
The application may use one or more license codes. One license code may pro-
vide, for example, the right for four users to use the application at once, while
another provides the right to two users to use the application at once. In this case,
six users would be able to run the application at once using both license codes. If
you need to add another concurrent user, this can easily be done by obtaining an
additional license code from your vendor.
Note Throughout this book we talk about getting licenses and releasing licenses.
Although it is convenient to talk about license management in this way,
strictly speaking, licenses are never physically moved between the network
license server and client computer. Instead, the license server simply keeps
track of how many users can run the application and decrements and incre-
ments the license count as authorized users are granted permission to run
the application and as they exit the application.
Computer Fingerprints and Locking Codes
Many applications are licensed to run on specific computers. Any restrictions on
which computers may run the application are stored in the license code. When
you purchase the application, if there are any computer restrictions, a license
code must be created which includes the information needed to identify a spe-
cific computer. Information that can be used to identify a computer is called its
fingerprint. This information might include the computer’s network address or
attached Computer ID key. Your vendor can select how much of this information
is required to establish a computer’s identity. The first step in creating a license
code that is restricted to a particular computer is to run a utility that collects the
information your vendor requires for computer identification. This utility col-