Operation Manual

Protect Your Network
6-2
Even your installation is not set with password, you can still enter system
maintenance to set up your password.
The users on the LAN are provided with secured protection by means of
following firewall facilities:
 IP Filter
 Stateful Packet Inspection: tracks packets and denies unsolicited
incoming data
 Selectable DoS/DDoS protection
 User-configurable packet filter
Note: When you would like to activate SPI (Stateful Packet
Inspection), please follow the path: Firewall>Edit Filter
Rule>Keep State
6.2 An Overview of the IP Filter/Firewall
The IP Filter/Firewall Setup in the Vigor routers mainly consists of the
packet filtering, Denial of Service (DoS) defense, and URL (Universal
Resource Locator) content filtering facilities. In this chapter, we focus on
the introduction of the packet filtering function. In the Chapter 8-A and 8-B
chapters, we will explain more about DoS defense and URL content
filtering facilities.