MLR 3G 2.0
Functions
10.4.5
Configuring a Talking Filter
To avoid unnecessary costs due to undesired dial-out processes, a dialling filter may be
activated optionally. This dialling filter can restrict the network traffic which could trig-
ger a dial-out process. After a dial-out connection is established, however, all participants
in the network may access the dial-out connection and transmit IP data.
Define here, which packets are allowed to initiate the dial-out connection via the MLR 3G
2.0. If you enable the dialling filter, only the dial-out connections are possible, which are
permitted by the dialling filter rules. All other connections will be blocked.
Configuration with the web interface
In order to
enable the dialling filter
, check in the menu "Dial-Out" on the page
"Dial filters" the checkbox "Activate Dial-Out filters for Dial-Out interface".
In order to
create a rule for a dialling filter
, proceed as follows.
Select in the menu "Dial-In" on the page "Firewall" the
protocol of the permit-
ted connection
in the drop-down menu "Protocol".
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 "/".
In order to allow DNS requests to the router, which would initiate a connec-
tion setup (DNS relay), explicitly, check the checkbox "Allow DNS requests
from source IP address to initiate a connection".
Save your settings
by clicking "OK".
In order to
disable individual dial-out rules temporarily
, disable in the menu
"Dial-Out" on the page "Dial filters" the checkbox in the column "active" in the
section "These data packets are allowed to initiate a Dial-Out". 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 section "These data packets are allowed to initiate a Dial-Out".
Click on "OK" to confirm the settings.
45
