MLR 3G 2.0
Functions
10.3.4
Creating or Deleting a Firewall Rule
The MLR 3G 2.0 provides a firewall for dial-in connections. A firewall is used to prevent
unauthorized data traffic. The logic of the firewall states that any data traffic is forbid-
den, which is not explicitly permitted through a rule.
Define here, which connections are permitted by the MLR 3G 2.0. If you enable the fire-
wall for the connection type "Dial-in", only connections are possible, which are allowed
by the firewall rules. All other connections will be blocked.
Configuration with the web interface
In order to
enable the firewall for dial-in connections
, check in the menu
"Dial-In" on the page "Firewall" the checkbox "Activate firewall for Dial-In con-
nections".
In order to
create a rule for an allowed IP connection
, proceed as follows.
Select in the menu "Dial-In" on the page "Firewall" in the drop-down menu
"Data direction" a
data direction
for the rule.
Define the
protocol of the permitted connection
in the drop-down menu "Pro-
tocol".
You can also make sure that the rule is
exclusively applied to a particular dial-
in user
. Select the according dial-in user name in the dropdown menu "Dial-In
user name".
Enter the further specifications of the connections permitted by the MLR 3G
2.0 into the entry fields "
Source IP address
", "
Destination IP address
" and "
Des-
tination port
". Only rules can be created, which are not valid for individual
machines (hosts), but for whole networks. In this case, the net mask must be
entered following the "/".
Save your settings
by clicking "OK".
In order to
disable firewall rules temporarily
, uncheck in the menu "Dial-In" on
the page "Firewall" the check box in the column "Active" in the firewall rule
overview. Click on "OK" to confirm the settings.
In order to
delete one or more rules
, check the checkbox in the column "de-
lete" in the firewall rule overview. Click on "OK" to confirm the settings.
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