Prestige 650R-31/33 ADSL Router

Filter Set

Start

Packet intoFilter

Fetch First Filter Set

Fetch Next

Filter Set

 

 

 

 

 

 

 

 

Fetch Next

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Filter Rule

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

Next Filter Set

 

 

 

 

Next filter

 

No

 

 

Rule

Available?

 

 

 

 

 

 

 

Available?

 

 

 

 

 

 

 

 

 

 

 

 

No

Check

Next

Rule

Drop Packet

Fetch First

Filter Rule

Yes

NoActive?

Yes

Execute

Filter Rule

Forward

Drop

Accept Packet

Figure 8-2 Filter Rule Process

You can apply up to four filter sets to a particular port to block various types of packets. Because each filter set can have up to six rules, you can have a maximum of 24 rules active for a single port.

Filter Configuration

8-3