ZyXEL Communications Prestige 643 - Manual (Page 122)

Prestige 643 ADSL Router
8-22 Filter Configuration
Table 8-8 Input, Output and Call Filter Sets
FILTER SETS DESCRIPTION
Input Filter Sets: Apply filters for traffic coming into the Prestige. You may apply filter
rules for protocol or device filters. See the next section for
information on types of filters.
Output Filter
Sets: Apply filters for traffic going out of the Prestige. You may apply filter
rules for protocol or device filters. See earlier in this section for
information on types of filters.
Call Filter Sets: Apply filters to determine if a packet should be allowed to trigger a
call.
8.5.1 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 the protocol
filters field under Input Filter Sets in Menu 3.1 to block NetBIOS traffic to the Prestige from the LAN.
Figure 8-17 Filtering LAN Traffic
8.5.2 Remote Node Filters
Go to Menu 11.5 (shown below – note that call filter sets are only present for PPPoE encapsulation) and
enter the number(s) of the filter set(s) as appropriate. You can cascade up to four filter sets by entering
their numbers separated by commas. The factory default filter set, NetBIOS_WAN, can be applied in Menu
Menu 3.1 – General Ethernet Setup
Input Filter Sets:
protocol filters= 2
device filters=
Output Filter Sets:
protocol filters=
device filters=
Press ENTER to Confirm or ESC to Cancel:
Apply default
filter 2 here.