ZyXEL Communications 782R User Manual

Prestige 782R G.SHDSL Router

8-18 

Filter Configuration

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 (but have not been applied) to filter traffic.

Input Filter Sets:

Apply filters for incoming traffic. You may apply protocol or device
filter rules. See earlier in this chapter for information on filters.

Output Filter Sets:

Apply filters for traffic leaving 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 decide if a packet should be allowed to trigger a call.

You seldom need to filter Ethernet traffic; however, the filter sets may be useful to block certain packets,
reduce traffic and prevent security breaches. Go to Menu 3.1 (shown next) and type 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
typing their numbers separated by commas, e.g., 3, 4, 6, 11. The factory default filter set, NetBIOS_LAN, is
inserted in the protocol filters field under Input Filter Sets in Menu 3.1 in order to prevent local NetBIOS
messages from triggering calls to the DNS server.

Go to Menu 11.5 (shown next) and type the number(s) of the filter set(s) as appropriate. You can cascade
up to four filter sets by type ing their numbers separated by commas. The factory default filter set,
NetBIOS_WAN, is inserted in protocol filters field under Call Filter Sets in Menu 11.5 to block local
NetBIOS traffic from triggering calls to the ISP.

Menu 3.1 – LAN Port Filter Setup

Input Filter Sets:

protocol filters=

device filters=

Output Filter Sets:

protocol filters=

device filters=

2

            Press ENTER to Confirm or ESC to Cancel:

Apply filter 2 to
block NETBIOS
traffic from the
LAN