Configuring the Optional Network68 Firebox X Edge e-SeriesTo configure the Firebox X Edge as a DHCP Relay Agent for the optional interface:1 Use your browser to connect to the System Status page. From the navigation bar, selectNetwork > Optional.The Optional Network Configuration page appears.2 Select the Enable DHCP Relay on Optional Network check box.3 Type the IP address of the DHCP server in the related field.4 Click Submit. You must restart the Firebox X Edge for the new configuration to activate.If the Firebox X Edge cannot connect to the DHCP server in 30 seconds, it uses its DHCP server to give IPaddresses to computers on the optional network. You must enable the DHCP server on the optionalnetwork for the DHCP relay function to operate.Using static IP addresses for optional computersYou can use static IP addresses for some or all of the computers on your optional network. If you dis-able the DHCP server and you do not have a DHCP server on your optional network, you must manuallyconfigure the IP address and subnet mask of each computer. You also can configure specified deviceswith a static IP address. For example, this is necessary for a web server or network printer. Static IPaddresses must be on the same network as the Firebox X Edge optional interface. Computers withstatic IP addresses on the optional network must use the optional interface IP address of the Edge asthe default gateway or router. If a computer does not use the Edge for the default gateway, it usually can-not get to the external network or the Internet. To disable the Firebox X Edge DHCP server, clear theEnable DHCP Server on the Optional Network check box on the Optional Network Configurationpage and click Submit.Adding computers to the optional networkYou can directly connect only one computer to the Firebox X Edge e-Series optional interface becausethere is only one optional Ethernet port. To connect more than one computer to the optional interface,use a 10/100 BaseT Ethernet hub or switch with RJ-45 connectors. It is not necessary for computers onthe optional network to use the same operating system.To add more than one computer to the optional 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 Connect tothe Edge” on page 17.3 Connect each computer to the network. For more information, see “Connecting the Edge tomore than four devices” on page 16.4 Restart each computer.Allowing wireless connections to the optional interfaceThe Firebox® X Edge e-Series Wireless can be configured as a wireless access point with three differentsecurity zones. You can enable wireless devices to connect to the Edge Wireless as part of the trustednetwork or part of the optional network. You can also enable a wireless guest services network forEdge users. When you allow wireless connections through the Edge optional interface, those wirelessdevices have full access to all computers on the optional network, and full Internet access according tothe rules you have configured for outgoing access on your Edge.
