
User Guide 51
Changing Your Network Settings
4 If necessary, type the new subnet mask.
Using DHCP on the trusted network
The DHCP Server option sets the Firebox X Edge e-Series to give IP addresses to the computers on the
trusted network. When the Edge receives a DHCP request from a computer on the trusted network, it
gives the computer an IP address. By default, the Edge has the DHCP Server option for the trusted inter-
face enabled.
To use DHCP on the trusted network:
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 Server on the Trusted Network check box.
3 Type the first and last available IP addresses for the trusted network. Do not include the IP address
of the Firebox X Edge.
The IP addresses must be on the same network as the trusted IP address. For example, if your trusted IP address is
192.168.200.1, the IP addresses can be from 192.168.200.2 to 192.168.200.254.
4 If you have a WINS or DNS server, type the WINS Server Address, DNS Server Primary Address,
DNS Server Secondary Address, and DNS Domain Suffix in the correct text boxes.
If you do not enter a value, the Firebox X Edge uses the same values as those used for the external network.
5 Click Submit.
Setting trusted network DHCP address reservations
You can manually give the same IP address to a specified computer on your trusted network each time
that computer makes a request for a DHCP IP address. The Firebox X Edge identifies the computer by its
MAC address.
1 Use your browser to connect to the System Status page. From the navigation bar, select Network >
Trusted.
The Trusted Network Configuration page appears.
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