Configure the WAN Adapter

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

On the demand-dial router at each site, use the following procedures, as appropriate, to configure the WAN adapter for a dial-up connection, the WAN adapter for a dedicated link to an ISP, or (if needed) to configure the DNS server IP address.

To configure the WAN adapter for a dial-up connection

1. On the demand-dial router at each site, install the WAN adapter. This WAN adapter is a modem, an ISDN adapter, or other physical device connected to one of the following:

   • For a non-VPN dial-up connection, the line that links the two sites.

   • For a VPN with a dial-up connection to the local ISP, the line that links the branch office router to its local ISP.

2. Provide the phone number and the authorized user name and password. Leave the Domain field blank. The phone number is one of the following:

   • For a non-VPN dial-up connection, the phone number of the answering router.

   • For a VPN that uses a modem, ISDN, or PPPoE dial-up connection to its local ISP, the phone number of the local ISP.

To configure the WAN adapter for a dedicated link from a VPN router to an ISP

1. On the demand-dial router at each site, install the Internet-connected WAN adapter. This WAN adapter is a DDS, T1, Fractional T1, or Frame Relay adapter.

2. On the WAN adapter’s Internet Protocol (TCP/IP) Properties page, configure the following:

   1. The public IP address and subnet mask allocated to you by your ISP (or by the InterNIC).

   2. The default gateway of the firewall (if you plan to have the router connect to a perimeter network) or of the ISP router (if you plan to have the router connect directly to the Internet).

To configure the DNS server IP address (if needed)

• If you have a VPN connection, configure the DNS server IP address on the Internet-connected interface of the calling router if either of the following is true:

  • If you use the DNS name of the answering router (instead of its IP address), you must specify the DNS server IP address in the Internet-connected interface of the calling router. Because the Routing and Remote Access Wizard clears the Register this connection’s addresses in DNS check box (on the DNS tab) and selects Disable NetBIOS over TCP/IP (on the WINS tab), you must configure the DNS server IP address on the VPN Internet-connected interface after you run the wizard.

  • If the branch office calling router will provide users access to the Internet (in addition to supporting site-to-site traffic to the main office), you must specify the DNS server IP address in the Internet-connected interface of the calling router. For more information about configuring access to the Internet, see "Configure Internet Access Through the Calling Router" later in this chapter.