ZyXEL Communications ZyXEL Prestige 100MH, Руководство пользователя, Страница: 90 / 129

Prestige 100MH PSTN Router/Hub
7-2
Chapter 7
Filter Configuration
Figure 7-1. Outgoing Packet Filtering Process
For incoming packets, your Prestige applies data filters only. Packets are processed depending
upon whether a match is found. Your Prestige allows you to customize the filter sets that you
wish to use. The following sections describe how to configure filter sets.
The Filter Structure of the Prestige
You can configure up to twelve filter sets with six rules in each set, allowing you to customize
up to 72 filter rules (12 x 6).
When implementing these filter sets, you can link up to four of the filter sets together to
screen the data packet. Therefore, with each filter set having up to six rules, you can have a
maximum of 24 rules active for a single filtering application.
Outgoing
Packet
Data
Filters
Drop
packet
User-defined
Call Filters
(if applicable)
Initiate call
if line not up
Active Data
Send packet
and reset
Idle Timer
Or Or
Drop packet
if line not up Drop packet
if line not up
Send packet
but do not reset
Idle Timer
Send packet
but do not reset
Idle Timer
Match Match Match
No
match
N o
match
No
match
Call Filters
Built-in
Call Filters