WSM User Guide - WatchGuard Technologies

Changing Firebox Interface IP Addresses5 Click OK. You must restart the Firebox to complete the change.Configuring the external interfaceThe Firebox can get a dynamic IP address for the external interface with Dynamic Host ConfigurationProtocol (DHCP) or PPPoE (Point-to-Point Protocol over Ethernet). With DHCP, the Firebox uses a DHCPserver that is controlled by your Internet Service Provider (ISP) to get an IP address, gateway, and netmask.With PPPoE, the Firebox makes a PPPoE protocol connection to the PPPoE server of your ISP. Fireware®supports unnumbered and static PPPoE.NoteIf you configure more than one interface as an external interface, only the lowest-order externalinterface can serve as an IKE gateway or an IPSec tunnel endpoint. If this interface is down, all IPSectunnels to and from the Firebox will not operate.Using a static IP address1 From the Interface Settings dialog box, select Static.2 Type the IP address of the default gateway.3 Click OK.Using PPPoESome ISPs assign their IP addresses through Point-to-Point Protocol over Ethernet (PPPoE). PPPoEexpands a standard dial-up connection to add some of the features of Ethernet and PPP. This systemallows the ISP to use the billing, authentication, and security systems of their dial-up infrastructure withDSL modem and cable modem products.If your ISP uses PPPoE, you must enter the PPPoE information into your Firebox before it can send trafficthrough the external interface.1 From the Interface Settings dialog box, select PPPoE.2 Select one of the two options:- Get an IP address automatically- Use IP address (supplied by your Internet Service Provider)3 If you selected Use IP Address, enter the IP address in the text box to the right.4 Type the User Name and Password. You must type the password two times.Frequently, ISPs use the e-mail address format for user names, such as myname@ispdomain.net.100 WatchGuard System Manager