Barracuda Networks SSL VPN, Руководство администратора

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64 Barracuda SSL VPN Administrator’s Guide
Attributes
As with any large user management system, functionality that allows for simpler administration is
always welcome. User attributes are a simple concept that allow for drastically reduced
administration overhead.
User attributes are simply attributes that perform a similar function to ‘environment variables’, and
can be created by a user and used throughout the system. The appliance comes with a set of default
attributes that cannot be removed; these are used by the Personal Details Authentication module.
Security Questions
One of the default user attributes is placeOfBirth; all users have this attribute stored under the Security
Questions section under Manage Account > My Account > Attributes. Each user can populate this
attribute with their respective answer and when the Personal Details authentication module is used at
log-on and asks a user for their place of birth, the module merely looks to the value stored under this
attribute for each user logging into the system. If the attribute keyed in value matches that of the stored
placeOfBirth value, authentication is successful.
For each user logging in, the respective attribute is compared allowing for a single attribute to be used
by all users.
Applications
Attributes can be used with application shortcuts. For example, an attribute can be created which
defines a hostname to use with a VNC Server application shortcut.
The attribute is created within the Manage System > Advanced > Attributes page under the Create
Attribute section and given a name, for example, 'vncServer' and a label 'VNC Server'. Selecting the
Edit action for this attribute allows the default hostname of the VNC server to be configured.
Each user is now able to define this attribute, specifying which server they wish to connect to when
using a VNC application shortcut. The new 'VNC Server' attribute will appear in the Edit Attributes
section under My Account > Attributes.
The VNC application shortcut can be configured to use this new attribute. Browse to Manage Account
> Resources > Applications and enter the relevant details in the Create Personal
Application Shortcut section:
• Application Name: select UltraVNC from the dropdown
• Name: enter a name for this application shortcut
• Hostname: click the ${} button at the side of the Hostname field and select
'userAttributes:vncServer' from the list.
Whenever the application shortcut is executed, the system takes the current user’s vncServer attribute
and uses the value as the hostname to connect to.
Each user can define their own vncServer attribute to point to whichever server they wish to connect
to. Thus for every user the application shortcut works differently, connecting to a different server
without any further modification.