Hardware Firewall Feature

© N. Ganesan, Ph.D.

Chapter Objectives

• Show the configuration of a hardware firewall such as Dlink DI 604

• Illustrate the sharing of a single Internet connection with multiple computers that are connected as a LAN using the firewall/switch

Overview of the Steps

• Connect the firewall to a client computer• Set the IP address of the client computer

to access the firewall• Access the firewall and set the firewall

properties such as the WAN IP addresses etc.

• Reset the IP address of the client from static IP to dynamic IP

• Connect the firewall to the WAN and LAN

Firewall Connection Overlay

• Illustration showing the public side (WAN) and the private side (LAN)

Three Major Features of the Firewall

• Firewall using Network Address Translation (NAT)

• DHCP server• Switch

Module

Connecting the Firewall

Items Provided with the Firewall

Ports

Status Indicators

Typical Connection

End of Module

Module

Specifying Client IP Address

Configuring the Firewall and the WAN Properties

Access from the client

Set Dynamic IP Address for the Client

Setting Dynamic IP Address

• It is not absolutely necessary to set the IP address of the client back to “dynamic” state

• However, it would be a good practice to do so

Checking for Internet Access

The End