Figure 8-2 Filter Rule Process - ZyXEL Communications Prestige 642R Series User Manual

Fetch Next
Filter Set
Yes
Next Filter Set
Available?
No
Drop Packet
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.
Filter Configuration
Filter Set
Fetch Next
Filter Rule
Yes
Next filter
No Rule
Available?
Check
Next
Rule
Figure 8-2 Filter Rule Process
Prestige 642R Series ADSL Router
Start
Packet into
filter
Fetch First
Filter Set
Fetch First
Filter Rule
No Active?
Yes
Execute
Filter Rule
Forward
Drop
Accept Packet
8-3