53
So that these special applications can work properly and are not
blocked, the firewall needs to be told about them. In each
instance there will be an outgoing trigger which tells the
Router’’s firewall that the application has started and to allow the
incoming connections.
Each defined Special Application only supports a single computer
user and any incoming ports opened by a Special Application
trigger will be closed after 20 minutes of inactivity for TCP/IP
connections or 10 for UDP/IP connections.
For each special application configured by the Router, a row is
added to the table. Each row contains the following items:
■
Delete
button — Deletes the special application on that row.
This will prevent the Router’s firewall from opening to that
connection.
■
Authorized Applications
— Each special application is named.
This name is not used by the Router and is only to enable you
to identify the connection. Clicking the name of a connection
displays the
Special Application Setup
screen. See
“Adding
and Editing Special Applications”
below.
■
Trigger Port
— This is the TCP/IP port number that the Router
uses to recognize that the application has started.
Additionally there are two buttons outside the table:
■
Help
— displays the online help page for this screen.
■
New
— creates a new special application. See
“Adding and
Editing Special Applications”
below.
Adding and Editing Special Applications
1
Click on the
New
button to create a new special application or
on the name of a special application to edit the settings for that
application.
Figure 51
Special Application Settings Screen
2
Select the applications from the
Choose Application
drop-down
box. See
Figure 51
. If the application you want to define is not in
the list select
Custom
and see
“Creating Custom Special
Applications”
below.
3
Click
Add
to add the special application to the list of protocols or
Close
to abort your selection and return to the
Special
Applications
screen.
Depending on the settings you have made in PC Privileges the
Special Application you have defined may not be allowed across
the Router. See
“PC Privileges”
on
page 50
.
Creating Custom Special Applications
If your special application is not listed in the
Choose Application
drop-down box you can still configure it manually. Select Custom
from the
Choose Application
drop-down box and the Special
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