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Prestige 941 Cable Router
Filter Configuration 6-1
Chapter 6
Filter Configuration
6.1 About Filtering
Your Prestige uses filters to decide whether to allow passage of a data packet.
Data filters screen the data to determine if the packet should be allowed to pass. Data filters are further
divided into incoming and outgoing filters, depending on the direction of the packet relative to a port.
The following sections describe how to configure filter sets.
The Filter Structure of the Prestige
A filter set consists of one or more filter rules. Usually, you would group related rules, e.g., all the rules for
NetBIOS, into a single set and give it a descriptive name. The Prestige allows you to configure up to twelve
filter sets with six rules in each set, for a total of 72 filter rules in the system.
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. The next diagram
illustrates the logic flow when executing a filter rule.