ZyXEL Communications P-660N-T1A, User Manual

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P-660N-T1A User’s Guide
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H A P T E R
11
Filters
11.1 Overview
This chapter introduces three types of filters supported by the ZyXEL Device. You
can configure rules to restrict traffic by IP addresses, MAC addresses, application
types and/or URLs.
11.1.1 What You Can Do in the Filter Screens
• Use the URL Filter screen ( Section 11.2 on page 152 ) to block access to web
sites.
• Use the Application Filter screen ( Section 11.3 on page 153 ) to allow or deny
traffic from certain types of applications.
• Use the IP/MAC Filter screen ( Section 11.4 on page 154 ) to create IP/MAC
filter rules.
11.1.2 What You Need to Know
The following terms and concepts may help as you read this chapter.
URL
The URL (Uniform Resource Locator) identifies and helps locates resources on a
network. On the Internet the URL is the web address that you type in the address
bar of your Internet browser, for example “http://www.zyxel.com”.
IP/MAC Filter Structure
An IP/MAC filter set consists of one or more filter rules. The ZyXEL Device 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.