Applying A Filter And Factory Defaults; Figure 19-12 Filtering Lan Traffic - ZyXEL Communications ZyXEL ZyWALL 2WE User Manual

19.6 Applying a Filter and Factory Defaults

This section shows you where to apply the filter(s) after you design it (them). The ZyWALL already has
filters to prevent NetBIOS traffic from triggering calls, and block incoming telnet, FTP and HTTP
connections.
If you do not activate the firewall, it is advisable to apply filters.
19.6.1 Applying LAN Filters
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 ZyWALL and output filter sets filter
outgoing traffic from the ZyWALL. For PPPoE or PPTP encapsulation, you have the additional option of
specifying remote node call filter sets.
Press ENTER to Confirm or ESC to Cancel:
19.6.2 Applying 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 ZyWALL already has filters to prevent NetBIOS traffic from triggering
calls, and block incoming telnet, FTP and HTTP connections.
Filter Configuration
Menu 3.1 – LAN Port Filter Setup
Input Filter Sets:
protocol filters=
device filters=
Output Filter Sets:
protocol filters=
device filters=

Figure 19-12 Filtering LAN Traffic

ZyWALL 2 and ZyWALL 2WE
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