P314 Broadband Sharing Gateway with
SUA for incoming packets. On the other hand, the generic, or device filters are applied to the raw packets that appear on the wire. They are applied at the point when the Prestige is receiving and sending the packets; i.e. the interface. The interface can be an Ethernet port or any other hardware port. The following diagram illustrates this.
Figure 7-13 Protocol and Device Filter Sets
7.5Applying a Filter and Factory Defaults
This section shows you where to apply the filter(s) after you design it (them). Sets of factory default filter rules have been configured in Menu 21 to prevent NetBIOS traffic from triggering calls, and block incoming telnet, FTP and HTTP connections.
7.5.1 LAN Traffic
LAN traffic filter sets may be useful to block certain packets, reduce traffic and prevent security breaches. Go to Menu 3.1 (shown next) and enter the number(s) of the filter set(s) that you want to apply as appropriate. You can choose up to four filter sets (from twelve) by entering their numbers separated by commas, e.g., 3, 4, 6, 11. Input filter sets filter incoming traffic to the Prestige and Output filter sets filter outgoing traffic from the Prestige. The factory default set, NetBIOS_LAN, can be inserted in protocol filters
Menu 3.1 – LAN Port Filter Setup
Input Filter Sets: protocol filters= 2
device filters= Output Filter Sets:
Protocol filters= device filters=
Apply Default Filter 2 here.
Press ENTER to Confirm or ESC to Cancel:
Figure 7-14 Filtering LAN Traffic
Filter Configuration |