User's Manual

Changing Your Network Settings
54 WatchGuard Firebox X Edge
network. This option lets computers in more than one office use the
same network address range. This procedure makes the Firebox a
DHCP relay agent .
To configure the Firebox as a DHCP relay agent for the trusted
interface:
1 Use your browser to connect to the System Status page. From
the navigation bar, select Network > Trusted.
The Trusted Network Configuration page appears.
2 Select the Enable DHCP Relay check box.
3 Type the IP address of the DHCP server in the related field.
4 Click Submit.
The Firebox restarts. If the Firebox can not connect to the DHCP server in
30 seconds, it uses its DHCP server to give IP addresses to computers on
the trusted network.
Using static IP addresses for trusted computers
You can use static IP addresses for some or all of the computers on
your trusted network. If you disable the DHCP server, you must
manually configure the IP address and subnet mask of each com-
puter. You can also configure specified computers with a static IP
address. For example, this is necessary when a client server software
application must use a static IP address for the server. Static IP
addresses must be on the same network as the Firebox trusted inter-
face.
To disable the Firebox DHCP server, clear the Enable DHCP Server
on the Trusted Network check box on the Trusted Network Config-
uration page.
Adding computers to the trusted network
The Firebox X Edge can connect to one to seven trusted computers.
You can use 10/100 BaseT Ethernet hubs or switches with RJ-45
connectors to connect more than seven computers. It is not neces-
sary that the computers on the trusted network use the same oper-
ating system.
To add more than seven computers to the trusted network:
1 Make sure that each computer has a functional Ethernet card.
2 Set each computer to use DHCP. For more information, see
“Setting your computer to use DHCP,” on page 20.