Link Communications RLC-CLUB, Руководство пользователя

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18-1
Version 1.73 Copyright © 1997 Link Communications Inc. 1/18/97
Chapter 18: 500 User Structure
The Password System
The RLC-Club provides several features that allow you to protect it from unwanted access.
They range from very simple to extremely secure. Of course the more secure methods are also
more complicated. If you don't need a lot of security, don't worry about the advanced password
features. This section discusses just the password structure. Other ways of adding security are
changing command names (see commands 010, 011, 012 and 062) and blocking access to
commands from certain ports (see commands 130, 131 and 132). The password system is
disabled when the controller is shipped and after you re-initialize it (which sets everything back
to defaults), so you don't have to worry about entering passwords until you are ready for it.
The password system allows you to require that users "log in" to the controller before they will
be able to execute some or all of the commands. You can even allow some users, such as
control operators, more access than others. This is accomplished by assigning each user a "user
level" which determines how much they are allowed to do. User levels can range from 0 to 7.
Typically, the owner of the system would be level 7, control operators level 6..3 (more on that
later), and other Club members level 2..1. Level 7 users always have access to every command
in the controller. A good rule is to assign lower levels to commands that are less important.
For example, lower level users can not access higher level commands, but higher level users
can access lower level commands.
When the password system is enabled, the RLC-Club requires a certain user level to execute
each command. The commands default to suggested levels, but you can change them if you
wish. When someone logs into the controller and tries to execute a command, their user level
must be equal to or greater than the level required by that command, or the RLC-Club will not
let them execute the requested command. The command for setting up passwords is a level 4
command, so only users that are level 4,5,6 or 7 can set passwords. The command to change
which ports are connected together is level 4, so user levels 4, 5, 6 and 7 can bring up links, set
up crossband repeaters, etc. Commands that are assigned level 0 can always be executed by
anyone, even if they do not log into the controller first. Recalling the time is an example of a
level 0 command.
You will need to tell the controller what each user's level is, and assign them a password,
callsign, autodial number and other information for each user. To keep track of this
information, you will need to assign each user a number between 001 and 500. We will call
this their "user number". It will also be their autodial slot number, their paging slot number,
etc. They will have to tell the controller what their user number is, along with their password,
to log in. For the purpose of examples in the manual, we will consider the owner to be user
001, the control operators to be 002 through 009, and the rest of the Club members 010 through
500, although it doesn't really matter whether you are user 003 or 300.
When someone tries to execute a command without logging onto the controller, the controller
doesn't know who they are, so it considers them to be user 000. If they try to execute a
command without logging onto the controller, the controller will compare the user level