ZyXEL P-861H-G2 User Guide - Page 201

Prestige 861H Series User's Guide 21.7.1 Ethernet Traffic 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, for example, 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. Figure 133 Filtering Ethernet Traffic Menu 3.1 - LAN Port Filter Setup Input Filter Sets: protocol filters= 3 device filters= Output Filter Sets: protocol filters= device filters= Press ENTER to Confirm or ESC to Cancel: 21.7.2 Remote Node Filters 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 typing their numbers separated by commas. The factory default filter set, NetBIOS_WAN, is inserted in the protocol filters field under Call Filter Sets in menu 11.5 to block local NetBIOS traffic from triggering calls to the ISP. Figure 134 Filtering Remote Node Traffic Menu 11.5 - Remote Node Filter Input Filter Sets: protocol filters= 6 device filters= Output Filter Sets: protocol filters= 2 device filters= Call Filter Sets: Protocol filters= Device filters= Enter here to CONFIRM or ESC to CANCEL: Note that call filter sets are visible when you select PPPoA or PPPoE encapsulation. Chapter 21 Filter Configuration 200