Prestige 623ME-T User’s Guide

 

Table 18-5 Filter Sets Table

 

 

FILTER SETS

DESCRIPTION

 

 

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.

 

 

18.6.1 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, 2, 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:

Figure 18-14 Filtering Ethernet Traffic

18.6.2 Remote Node Filters

Apply filter 2 to

block NETBIOS

traffic from the

LAN.

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.

18-18

Filter Configuration