ZyXEL P-660HN-51 User Guide - Page 155
Filters
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CHAPTER 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 156) to block access to web sites. • Use the Application Filter screen (Section 11.3 on page 157) to allow or deny traffic from certain types of applications. • Use the IP/MAC Filter screen (Section 11.4 on page 158) to create IP/MAC filter rules. 11.1.2 What You Need to Know About Filtering 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. P-660HN-TxA User's Guide 155