ZyXEL P-324 User Guide - Page 266

Prestige 324 User's Guide If you do not activate the firewall, it is advisable to apply filters. 23.6.1 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 Prestige and output filter sets filter outgoing traffic from the Prestige. For PPPoE or PPTP encapsulation, you have the additional option of specifying remote node call filter sets. Menu 3.1 - LAN Port Filter Setup Input Filter Sets: protocol filters= device filters= Output Filter Sets: protocol filters= device filters= Press ENTER to Confirm or ESC to Cancel: Figure 23-13 Filtering LAN Traffic 23.6.2 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 Prestige already has filters to prevent NetBIOS traffic from triggering calls, and block incoming telnet, FTP and HTTP connections. Filter Configuration 23-17