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Execute filter rule, Filter set – ZyXEL Communications Prestige 642 User Manual

Page 8

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Prestige 642 ADSL Internet Access Router

Filter Configuration

8-3

Start

Fetch First

Filter Set

Fetch First

Filter Rule

A c t i v e ?

Execute

Filter Rule

F e t c h N e x t

Filter Rule

Next filter

R u l e

Available?

F e t c h N e x t

Filter Set

Next Filter Set

Available?

A c c e p t P a c k e t

D r o p P a c k e t

Y e s

N o

Y e s

N o

Y e s

Packet into

filter

Filter Set

Forward

Drop

N o

Check

Next
Rule

Figure 8-2

Filter Rule Process

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.