Prestige 645 ADSL Internet Access Router

 

 

 

Start

 

 

 

Packet

 

 

 

into Filter

 

 

 

Fetch First

 

 

 

Filter Set

Fetch Next

Filter Set

Fetch First

 

Filter Set

 

 

Filter Rule

Yes

 

 

Fetch Next

 

 

Yes

 

 

Filter Rule

 

 

 

Next Filter Set

No

Next Filter Rule

Execute Filter

Available?

Available?

Rule

 

Check Next Rule

No

DropForward

Drop Packet

Accept Packet

Figure 8-2 Filter Rule Process

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

8-3