Figure 5-1 Filter Rule Process - ZyXEL Communications Prestige 642M series User Manual

Prestige 642M Series ADSL Bridge
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.
5-2
Filter Set
Fetch Next
Filter Rule
Yes
Next filter
No Rule
Available?
Check
Next
Rule

Figure 5-1 Filter Rule Process

Start
Packet into
filter
Fetch First
Filter Set
Fetch First
Filter Rule
No Active?
Yes
Execute
Filter Rule
Forward
Drop
Accept Packet
Filter Configuration