INSYS MoRoS GPRS 2.1 PRO, Руководство пользователя

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MoRoS GPRS 2.1 PRO Functions
12.4.5 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
trigger 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
MoRoS GPRS 2.1 PRO. 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 inter-
face".
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
permitted connection in the drop-down list "Protocol".
Enter the further specifications of the connections permitted by the Mo-
RoS GPRS 2.1 PRO into the entry fields "Source IP address", "Destination
IP address" and "Destination 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 con-
nection setup (DNS relay), explicitly, check the checkbox "Allow DNS re-
quests 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 "ac-
tive" 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
"delete" in the section "These data packets are allowed to initiate a Dial-
Out". Click on "OK" to confirm the settings.
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