Lightning SA MultiCom, User Manual, Page: 42 / 172

Chapter 3 Getting Started
42 MultiCom Firewall User’s Manual
If this is the case then your MultiCom Firewall will receive its
configuration information directly from your modem. If you are unsure
ask whomever installed your xDSL/ Cable line whether your modem is
acting as a Bridge or as a DHCP Server.
Configuring Your Computers
To communicate with the MultiCom Firewall you will need to be sure that your
computer is configured to access it. There are two general paths for you to follow.
• Set each computer as a DHCP client to receive all necessary information
from the MultiCom Firewall each time you boot up your computer on the
local network.
• Manually choose IP addresses for each computer on your network between
10.0.0.2-10.255.255.255, with a subnet mask of 255.0.0.0 and enter in the IP
address of the MultiCom Firewall (10.0.0.1) as the default gateway and DNS
server used to reach the Internet.
The process to enter these settings into your computer varies depending on your
operating system. If you do not see your operating system represented in the
following sections please refer to your computer's user manual for explanations
on configuring your network settings.
Optionally you can make this configuration on only 1 computer to allow access to
the MultiCom Firewall. After you have network access to the MultiCom Firewall
you can reconfigure the LAN IP parameters to another subnet and also deactivate
the DHCP server if there is another being used on your network.
CAUTION - Windows users who were previously connecting to the
Internet using an analog or built-in modem or special PPPoE software
may need to change their Internet Explorer settings.
Open Internet Explorer, choose Tools and select Internet Options.
Under the Connections tab verify that “Never dial a connection” and
“use local LAN” is selected. Otherwise every time you want to use the
Internet, Windows will try to use the modem.