Watchguard Firebox SSL Series, User Manual

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Administration Guide 93
Configuring Properties for a User Group
Configuring Web Session Time-Outs
When a user is logged on to the Firebox SSL VPN Gateway and using a Web browser to connect to Web
sites in the secure network, cookies are set to determine if a user’s Web session is still active on the Fire-
box SSL VPN Gateway. If the Firebox SSL VPN Gateway cookie expires and logon page authentication is
enabled, the end user is prompted to enter authentication credentials to resume the Web session. This
provides a measure of security for limiting the amount of time network attacks could occur during an
unattended Web session.
To enable Web session time-outs
1
Click the Global Cluster Policies tab.
2
Under Access options , type the number of minutes in Web session time-out .
To disable Web session time-outs, type 0 in the text box.
Disabling Desktop Sharing
The Secure Access Client includes a desktop sharing feature. A user can right-click the Secure Access Cli-
ent icon in the Windows notification area and select
Share Desktop . Selecting this option displays a list
of all other users who are logged on to the Firebox SSL VPN Gateway from a Secure Access Client.
In some organizations, this feature may cause privacy concerns because it allows any user who logged
on through the Secure Access Client to view a list of all other users who are currently logged on.
If you want to prevent a specific group of users from viewing the list of online users, you can disable the
desktop sharing feature for an Firebox SSL VPN Gateway user group.
Disabling desktop sharing for a user group causes the following to occur:
•
When a member of the user group right-clicks the Secure Access Client icon in the Windows
notification area, the
Share Desktop option is not on the menu. Users in this group cannot display a
list of the other online users from the Secure Access Client icon (or use the desktop sharing feature).
•
Members of the user group do not appear in the online lists of other users for whom desktop sharing
is enabled.
To disable desktop sharing
1 Click the Access Policy Manager tab.
2
In the left pane, right-click a group and click Properties .
3
On the General tab, under Application options , select Disable desktop sharing .
4 Click OK .
Setting Application Options
Application policies limit the network access further by assigning individual network resources to spe-
cific applications. Application policies define the network path and endpoint policies for a specific appli-
cation. When an application policy is created and then added to a user group, the application can use
only the specified network path and endpoint policy. This does not prevent other applications from
using these resources. To prevent applications from using these network resources, you can deny access
to the network.
To deny applications without policies
1 On the Access Policy Manager tab, right-click a user group and click Properties .