ZyXEL Communications 792H manual Remote Node Filters, Filtering Ethernet Traffic

Apply filter 1 to block NETBIOS traffic to the WAN.

Apply filter 3 to block Telnet traffic from the WAN; filter 4 to allow PPPoE packets only, and filter 5 to deny FTP traffic from the WAN.

Prestige 791R G.SHDSL Router

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.

Menu 3.1 – LAN Port Filter 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 filter 2 to

block NETBIOS

traffic from the

LAN

Figure 28-19 Filtering Ethernet Traffic

28.6.2 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.

Menu 11.5 - Remote Node Filter

Input Filter Sets: protocol filters= 3,4,5

device filters= Output Filter Sets: protocol filters= device filters= Call Filter Sets:

Protocol filters= 1

Device filters=

Enter here to CONFIRM or ESC to CANCEL:

Figure 28-20 Filtering Remote Node Traffic

Note that call filter sets are visible when you select PPPoA or PPPoE encapsulation.

Filter Configuration 28-21