Packet Filter; Chapter 12 Packet Filter; Overview; What You Can Do In The Packet Filter Screen - ZyXEL Communications P-793H v3 User Manual

12.1 Overview

Your P-79X uses filters to decide whether to allow passage of traffic. This chapter discusses how to
create and apply filters.

12.1.1 What You Can Do in the Packet Filter Screen

Use the Packet Filter screens
the rules for protocol and generic filters.

12.1.2 What You Need to Know About the Packet Filter

Filters
Your P-79X uses filters to decide whether to allow passage of a data packet. Filters are subdivided
into generic and protocol filters. Generic filter rules act on the raw data from/to LAN and WAN.
Protocol filter rules act on IP packets.
Filter Structure
A filter set consists of one or more filter rules. The P-79X 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 generic
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.
Finding Out More
See Section 12.3 on page 125

12.2 The Packet Filter Screen

Use this screen to set up packet filters on your P-79X. Click Security > Packet Filter to display
the following screen.
C
HAPTER
(Section 12.2 on page 119) to display the filter sets and configure
for technical background information on packet filters.
P-79X Series User's Guide
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Packet Filter