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System Administration
22
4.1.1. Login level
A user's login level is set with the
level
attribute, and determines what CLI commands the user can run. The
default, if the
level
attribute is not specified, is
ADMIN
- you may wish to downgrade the level for users who
are not classed as 'system administrators'.
Table 4.1. User login levels
Level
Description
NOBODY
Unknown or not logged in user
GUEST
Guest user
USER
Normal unprivileged user
ADMIN
System administrator
DEBUG
System debugging user
4.1.2. Configuration access level
The configuration access level determines whether a user has read-only or read-write access to the
configuration, as shown in Table 4.2 below. This mechanism can also be used to deny all access to the
configuration using the
none
level, without actually deleting the user definition.
This setting is distinct from, and not connected with, the login level described above. You can use the access
level to define, for example, whether a USER login-level user can modify the configuration. Typically an
ADMIN (or DEBUG) login-level user would always be granted full access, so for ADMIN or DEBUG level
user's, the default of
full
is suitable.
Table 4.2. Configuration access levels
Level
Description
none
No access unless explicitly listed
view
View only access (no passwords)
read
Read only access (with passwords)
full
Full view and edit access - DEFAULT
4.1.3. Login idle timeout
To improve security, login sessions to either the web user interface, or to the command-line interface (via telnet,
see Chapter 17), will time-out after a period of inactivity. This idle time-out defaults to 5 minutes, and can be
changed by setting the
timeout
attribute value.
The time-out value is specified using the syntax for the XML fb:duratin data type. The syntax is hours, minutes
and seconds, or minutes and seconds or just seconds. E.g.
5:00
.
To set a user's time-out in the user interface, tick the checkbox next to
timeout
, and enter a value in the
format described above.
Setting a timeout to 0 means unlimited and shoudl obviously be used with care.
4.1.4. Restricting user logins
4.1.4.1. Restrict by IP address
You can restrict logins by a given user to be allowed only from specific IP addresses, using the
allow
attribute.
This restriction is per-user, and is distinct from, and applies in addition to, any restrictions specified on either the
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