Draytek Vigor2000 Guide d'installation télécharger pdf (Page 86)

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Advanced Setup

5.5 IP Filter/Firewall Setup

The IP Filter/Firewall function helps to prevent your local network

against attack from outside. It also provides a method of restricting

users on the local network from accessing the Internet. Additionally,

it can filter out specific packets to trigger the router to place an outgoing

connection.

5.5.1 An Overview of the Firewall

The IP Filter/Firewall includes two types of filter: Call Filter and Data

Filter. The former is designed to block or allow IP packets that will

trigger the router to establish an outgoing connection. The later is

designed to block or allow which kind of IP packets are allowed to

pass through the router when the WAN connection has been estab-

lished.

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Draytek Vigor2000 Guide d'installation Page 86