Configuring A Filter Set; Figure 9-2 Outgoing Packet Filtering Process - ZyXEL Communications Prestige 202 User Manual

Outgoing
Data
Packet
Filtering
Drop
packet
For incoming packets, your Prestige applies data filters only. Packets are processed depending
upon whether a match is found. The following sections describe how to configure filter sets.
The Filter Structure of the Prestige
A filter set consists of one or more filter rules. Usually, you would group related rules, e.g., all the
rules for NetBIOS, into a single set and give it a descriptive name. The Prestige allows you to
configure up to twelve filter sets with six rules in each set, for a total of 72 filter rules in the
system.
You can apply up to four filter sets to a particular port to block multiple types of packets. With
each filter set having up to six rules, you can have a maximum of 24 rules active for a single port.
9.2

Configuring a Filter Set

To configure a filter set, follow the procedures indicated:
Select option 21. Filter Set Configuration from the Main Menu to open Menu 21.
Step 1.
Filter Configuration
No
Built-in
match
default
Call Filters
Match Match
Drop packet
if line not up

Figure 9-2 Outgoing Packet Filtering Process

Call Filtering
No
User-defined
match
Call Filters
(if applicable)
Match
Drop packet
if line not up
Or Or
Send packet
but do not reset
Idle Timer
Prestige 202 ISDN Router
Active Data
No
match
Initiate call
if line not up
Send packet
and reset
Idle Timer
Send packet
but do not reset
Idle Timer
9-3