Netopia 3346N-ENT User Guide (en)

Virtual Private Networks (VPNs)   5-21
Dial-Up Networking for VPN
Microsoft Windows Dial-Up Networking software permits a remote standalone workstation to establish a VPN 
tunnel to a PPTP ser ver such as a Netopia Router located at a central site. Dial-Up Networking also allows a 
mobile user who may not be connected to a PAC to dial into an intermediate ISP and establish a VPN tunnel to, 
for example, a corporate headquar ters, remotely. Netopia Routers also can ser ve as a PAC at the workstation's 
site, making it unnecessar y for the standalone workstation to initiate the tunnel. In such a case, the Dial-Up 
Networking software is not required, since the Netopia Router initiates the tunnel.
This section is provided for users who may require the VPN client software for Dial-Up Networking in order to 
connect to an ISP who provides a PPTP account.
Microsoft Windows Dial-Up Networking (DUN) is the means by which you can initiate a VPN tunnel between your 
individual remote client workstation and a private network such as your corporate LAN via the Internet. DUN is a 
software adapter that allows you to establish a tunnel.
DUN is a free add-on available for Windows 95, and comes standard with Windows 98, Windows NT, and 
Windows XP. The VPN tunnel behaves as a private network connection, unrelated to other traffic on the network. 
Once you have installed Dial-Up Networking, you will be able to connect to your remote site as if you had a direct 
private connection, regardless of the inter vening network(s) through which your data passes. You may need to 
install the Dial-Up Networking feature of Windows 95, 98, or 2000 to take advantage of the vir tual private 
networking feature of your Netopia Router.
For the latest information and tech notes on Dial-Up Networking and VPNs be sure to visit the Netopia 
website at and, for the latest software and release notes, the Microsoft website at
Installing Dial-Up Networking
Check to see if Dial-Up Networking is already installed on your PC. Open your My Computer (or whatever you 
have named it) icon on your desktop. If there is a folder named Dial-Up Networking, you don’t have to install it. 
If there is no such folder, you must install it from your system disks or CDROM. Do the following:
From the Start menu, select Settings and then Control Panel.
In the Control Panel window, double-click the Add/Remove Programs icon.
The Add/Remove Programs Proper ties window appears.
Click the Windows Setup tab.
Double-click Communications.