ZyXEL Communications Prestige 314 PLUS - Manual (Page 124)

Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch
7-18 Filter Configuration
Figure 7-15 Protocol and Device Filter Sets
7.5 Applying 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
You seldom need to filter LAN traffic; however, the filter sets may be useful to block certain packets, reduce
traffic and prevent security breaches. Go to menu 3.1 (shown below) 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. A factory default set, NetBIOS_LAN, is
inserted in protocol filters field under Input Filter Sets in menu 3.1 to block NetBIOS traffic to the Prestige
from the LAN.