Windows NT 4.0 Installing the AltaVista Tunnel Extranet Serverfor Windows NT

109 3. Open the Control Panel, then the Network control panel. 4. Select the Services tab. 5. Click the Add button. 6. The system will build network services options. When its done, click the Have Disk button. 7. Type the path to the installation files. The path must be to a directory with the oem- setup.inf file. 8. From the Select OEM Option dialog box, select the AltaVista Tunnel. 9. The installation wizard will take over. Just follow the directions. Dont be afraid. You will be asked to provide a password for this server. 10. When youve finished, the Network control panel will reappear, with the AltaVista Tunnel as a service. Click Close. 11. The system will prompt you to reboot.

7.2.3 Installing the AltaVista Tunnel Telecommuter Client for Windows

The Telecommuter Tunnel is distributed on 3.5-inch disks and via the Internet as a .ZIP file. Once the installation files are obtained, run the setup.exe file and follow the directions as they appear. All Tunnel files will be installed to this default path: C:\AltaVista\Tunnel\Program. You will be given the option to change this path at the time of installation. When installing on Windows NT, you must first open the Networking control panel, open the Services dialog screen, and select Add. Type in the path to the directory and drive where the installation files reside, and click OK. A dialog box will appear with the AltaVista Tunnel as an installation option. Clicking on this option initiates the installation process. The following files are available in the Program folder: etunnel.exe This starts the AltaVista Telecommuter Tunnel client. krm.exe The Keyring Manager is a database of encryption keys available to the client. etunnel.hlp This is a comprehensive help file for configuring and using the Tunnel client.

7.2.4 Installing the AltaVista Tunnel Telecommuter Client for MacOS

The minimum requirements for the Telecommuter Client for MacOS are as follows: a PowerPC processor, MacOS version 7.5 or later, Open Transport 1.1.1 or later, 16 MB of memory, and 1 MB of free disk space. The client is distributed either on floppy disk or via AltaVistas download site in binhex format. Once the media is decompressed, double-click on the AltaVista Tunnel Install icon. In the installation window, drag the Tunnel icon to the System Startup disk. You will be prompted to restart by the installer. 110 To start the tunnel application, simply double-click on the AltaVista Tunnel Setup icon in the AlstaVista Tunnel folder on your System Startup disk. Configuration of the AltaVista tunnel client is covered in Section 7.4 later in this chapter.

7.3 Configuring the AltaVista Tunnel Extranet and Telecommuter Server

The configuration of the AltaVista Tunnel Extranet and Telecommuter servers are fairly generic across platforms. Both servers install identically. Most references in this section apply specifically to the Windows NT configuration. Any quirks in the Unix configuration are noted. The first step is to decide which physical servers or computers on the local network will be allowed tunnel traffic. Next, create a group of dynamic IP addresses. There should be twice as many IPs as tunnels to connect to the tunnel server. A pair of IP addresses will be assigned to each end of the connecting tunnel, one for the servers interface and one to the end users. Note that Windows NT versions of the ExtranetTelecommuter server are capable of connecting only a certain number of tunnels, so be sure to check the number of tunnels needed. Once these items are taken care of, the administrator must decide which tunnel groups are needed. As explained in Chapter 6 , the administrator is able to configure the tunnel server for several different groups. Each group would have different users and connection attributes. Users can belong to one or more groups, depending on their needs and duties. For example, the network administration staff should belong to all groups for testing and troubleshooting purposes.

7.3.1 Adding Routes and Dynamic Addresses

These tasks make your network configuration known to the AltaVista Tunnel.

7.3.1.1 Initial configuration

After the tunnel groups are planned out, youre ready to begin configuration. When you launch the Tunnel Manager for the first time, you will be prompted to enter the routed network and dynamic range for the tunnel server. First, the network available to the tunnel groups is added to the server. In Figure 7-1 , the following variables are required: Subnet This is the subnet of the network addresses on the local network that are part of the tunnel. Traffic destined for these IP addresses will use the tunnel network. Should this route contain the entire local network, a zero as the last IP address position is required. For instance: 205.196.222.0. Netmask This is the Netmask corresponding to the assigned subnet.