beautypg.com

Execute filter rule, Filter set – ZyXEL Communications Internet Security Gateway ZyWALL 100 User Manual

Page 198

background image

ZyWALL 100 Internet Security Gateway

Filter Configuration

19-3

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 19-2 Filter Rule Process