User's Manual

3.4 Firewall

The firewall function of the router implements corresponding control to data flow at entry

direction (from Internet to local area network) and exit direction (from local area network to

Internet) according to the content features of message (such as: protocol style,

source/destination IP address, etc. ) and ensures safe operation of router and host in local area

network.

Settings of firewall include basic setup, access control, filtering, port mapping, virtual IP mapping,

DMZ setup and MAC-IP Binding.

3.4.1 Basic Setup

From the navigation tree, select Firewall >> Basic Setup, then enter the “Basic Setup” page.

Table 3-4-1 Firewall - Basic Setup Parameters

Basic Setup of Firewall

Function description: Set basic firewall rules.

Parameters

Description

Default

Default Filter Policy

Select accept/block

Filter PING detection from Internet

Select to filter PING detection

Disable

Filter Multicast

Select to filter multicast function

Enable

Defend DoS Attack

Select to defend DoS attack

Enable

3.4.2 Access Control (ACL)

It implements permission or prohibition of access for appointed data flow via configuration of

some matching rules so as to filter the network interface data. After message is received by port

of router, the field is analyzed according to the rule applied on the current port. And after the

special message is identified, the permission or prohibition of corresponding packet is

implemented according to present strategy.

To enable Access Control from the navigation tree, select Firewall >> Access Control, then enter

“Access Control” page.