The Filter Structure Of The Prestige - ZyXEL Communications VoIP Station Gateway P-2302R Series User Manual

P-2302R Series User's Guide

30.1.1 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 cannot mix device filter rules and protocol filter rules within the same set. 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 following figure illustrates the logic flow when executing a filter rule. See also
on page 284
277
for the logic flow when executing an IP filter.
Figure 155
Chapter 30 Filter Configuration