ZyXEL Communications Prestige 480 - Manual (Page 144)

Prestige 480 Dual BRI ISDN Router
9-2 Filter Configuration
Start
Packet
into Filter
Accept Packet Drop Packet
Fetch Next
Filter Set
Next Filter Set
Available?
Yes
Filter Set
Fetch First
Filter Rule
Execute Filter
Rule
Next Filter Rule
Available?
Fetch Next
Filter Rule
No
Fetch First
Filter Set
Yes
Check Next Rule
Drop
No
Forward
Figure 9-1 Filter Rule Process