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Virtual Private Networks, Second Edition by Paul Wolfe, Charlie Scott, Mike Erwin

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Configuring PPTP for Dial-up Networking on a Windows NT Client

To dial into an ISP that supports PPTP using a Windows NT client, you simply configure dial-up networking as you normally would—with the addition of setting authentication and encryption options. In this section, we’ll focus on setting up an NT client to use the PPTP protocol when you’re connecting to a provider that doesn’t support it. Below we’ve listed the steps for setting up a PPTP connection. We’ll assume that you’ve already configured Dial-Up Networking to call your ISP and set up a PPP connection.

  1. Set up the PPTP protocol the same way you set it up for the RAS server in items 1 through 6 in Section 5.1.1.

  2. RAS configuration is also similar to the way it was done in Section 5.1.2. This time, for item 3, click the Configure button in the Remote Access Setup dialog box. From there, select the Dial Out box, since we want to be able to dial out from the client rather than dial in.

  3. From the start menu under Programs Accessories, select Dial-Up Networking.

    When the Dial-Up Networking dialog box appears, click the New button and enter the name you want to call your VPN connection on the Phonebook Entry dialog box. For our scenario, we’ll use “Central Office VPN.” In the Phone Number field, enter the IP address of the PPTP RAS server to which you’re connecting. For our example, it’s 2.1.1.60. In the Dial Using field, select one of the VPN ports you created while installing PPTP and RAS. They will have the name RASPPTPPM ...

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