SonicWALL TELE3 SP, Руководство администратора

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Page 90 SonicWALL TELE3 SP Administrator’s Guide
Intranet
The SonicWALL can be configured as an Intranet firewall to prevent network users from
accessing sensitive servers. By default, users on your LAN can access the Internet router, but
not devices connected to the WAN port of the SonicWALL. To enable access to the area
between the SonicWALL WAN port and the Internet, you must configure the
Intranet settings
on the SonicWALL.
Note : The functionality of this feature can be affected if a WAN Failover to the modem occurs
on the SP.
Intranet firewalling is achieved by connecting the SonicWALL between an unprotected and a
protected segment of the network.
Installation
1. Connect the LAN Ethernet port on the back of the SonicWALL to the network segment to
be protected against unauthorized access.
2. Connect the WAN Ethernet port on the back of the SonicWALL to the rest of the network.
Note : Devices connected to the WAN port do not have firewall protection. It is
recommended that you use another SonicWALL Internet security appliance to protect
computers on the WAN
.
3. Connect the SonicWALL to a power outlet, and turn it on.
Intranet Configuration
Click Advanced on the left side of the browser window, and then click the Intranet tab.
To enable an Intranet firewall, you must specify which machines are located on the LAN, or you
must specify which machines are located on the WAN.
It is best to select the network area with the least number of machines. For example, if only one
or two machines are connected to the WAN, select
Specified address ranges are attached