Firewall Versus Filters; Applying A Filter; Applying Lan Filters; Figure 178 Protocol And Device Filter Sets - ZyXEL Communications ZyAIR G-2000 Plus User Manual

Figure 178 Protocol and Device Filter Sets

29.5 Firewall Versus Filters

Firewall configuration is discussed in the firewall chapters of this manual. Further
comparisons are also made between filtering, NAT and the firewall.

29.6 Applying a Filter

This section shows you where to apply the filter(s) after you design it (them). The ZyAIR
already has filters to prevent NetBIOS traffic from triggering calls, and block incoming telnet,
FTP and HTTP connections

29.6.1 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 ZyAIR and output filter sets filter outgoing traffic from the ZyAIR. For PPPoE or
PPTP encapsulation, you have the additional option of specifying remote node call filter sets.
Chapter 29 Filter Configuration
.
Note:
If you do not activate the firewall, it is advisable to apply filters
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