3Com SUPERSTACK 3CR16110-95, User Manual, Page: 115 / 214

Specifying Intranet Settings 115
Figure 51 Connecting the Firewall to protect an internal part of the network
Installing the Firewall
to Protect the
Intranet
The following describes how to install and configure the Firewall to
provide intranet firewalling.
1 Connect the Ethernet port labeled LAN on the front of the Firewall to the
network segment that will be protected against unauthorized access.
2 Connect the Ethernet port labeled WAN on the front of the Firewall to
the rest of the network.
Devices connected to the WAN port do not have firewall or Web Site
Filter protection. It is advised that you use another Firewall to protect
these computers.
3 Connect the power cord to the back of the Firewall and then connect to
an AC power outlet.
Configuring the
Firewall to Protect
the Intranet
Click Advanced , and then select the Intranet tab. A window similar to
that in Figure 52 displays.
F2
F2
F1
F1
Unrestricted Area
Optionally
Firewalled from the
external networks.
Unsecured
Network
Internet
or
Restricted Area
Firewalled from the
rest of your
network.
External Firewall Internal Firewall Router
R
R
Key:
DUA1611-0AAA02.book Page 115 Thursday, August 2, 2001 4:01 PM