ZyXEL Communications Internet Security Gateway ZyWALL 2 Series - Manual (Page 439)

ZyWALL 2 Series User’s Guide
Filter Configuration 30-3
Start
Fetch First
Filter Set
Fetch First
Filter Rule
Active?
Execute
Filter Rule
Fetch Next
Filter Rule
Next filter
Rule
Available?
Fetch Next
Filter Set
Next Filter Set
Available?
Accept Packet Drop Packet
Yes
No
Yes
No
Yes
Packet into
filter
Filter Set
Forward
Drop
No
Check
Next
Rule
Figure 30-2 Filter Rule Process