You can test the VPN Concentrator by using Microsoft Dial-Up Networking under Windows 95 on a remote PC with a modem. You can also connect to an ISP and use PPTP to create a VPN tunnel to a private corporate Windows NT network.
We first describe the necessary VPN Concentrator configuration settings, then the PC settings, and finally the steps in the test.
Note These instructions in its labs describe a typical installation. Please consult your ISP and your network
system administrator for specific settings and instructions.
VPN Concentrator Configuration Settings
Configure the VPN Concentrator with the following settings:
Ethernet 2 (Public) interface with appropriate IP address (for example, 192.168.12.34) and default public filter.
Appropriate DNS server, domain name, and default gateway.
PPTP tunneling protocol with encryption required (MSCHAP).
Address assignment from an appropriate configured pool of IP addresses.
User authentication from the internal server.
Client username (for example, simonz) and password (for example, 9se7pt14) added to the internal server user database.
Windows 95 PC Client Configuration
Configure the remote Windows 95 PC and modem with the following settings:
Install and set up Microsoft Dial-Up Networking (DUN) 1.3 according to Microsoft instructions.
(DUN 1.3 is available as a free download from the Microsoft website, www.microsoft.com. Windows 98 Dial-Up Networking includes the DUN 1.3 functions; an update is not necessary.)
Configure Dial-Up Networking according to Microsoft instructions.
Set up a connection to the Internet through your ISP. Be sure you can use PPP on your ISP account. Configure this connection to use TCP/IP, and configure appropriate IP address assignment and name server addresses according to instructions from your ISP.
Set up a second connection to the VPN Concentrator using the Microsoft VPN Adapter. Connect to the IP address on the VPN Concentrator public interface (for example, 192.168.12.34). Configure Server Types to Log on to network, Enable software compression, and Allow TCP/IP. Configure TCP/IP Settings with Server assigned IP address, Specify name server addresses, and Primary WINS IP address (from your network administrator).
Configure Network Neighborhood > Properties and configure the Client for Microsoft Networks > Properties > General: check Log on to Windows NT domain, and enter your domain name in Windows NT domain field (for example, BigCo).
Testing the VPN Connection
Now make the network connections and examine their status. To verify that you are connected to the private corporate network, follow these steps:
Step 1 Use the ISP connection in Dial-Up Networking and connect to your ISP with a PPP connection.
Step 2 Use the VPN connection in Dial-Up Networking and connect to the VPN Concentrator with your username (for example, simonz) and password (for example, 9se7pt14).
Step 3 When the NT Domain login window appears, enter your NT username, password, and domain (for example, BigCo).
Step 4 Examine the status of your ISP connection. You should see a window similar to Figure 5-1:
Figure 5-1 Connected to ISP Screen
Step 5 Examine the status of your VPN connection. You should a window similar to Figure 5-2:
Figure 5-2 Connected to VPN Screen
Step 6 Use Windows Explorer to open Network Neighborhood. You should see and be able to access network nodes, folders, and files as if you were in the office and using Explorer on your usual system.
