3Com Dual 56K User Manual

Also see for 3C888 - OfficeConnect Dual 56K LAN Modem Router: Getting started guide

Contents

3Com Dual 56K User Manual Manual pdf 151 page image

C CREATING A VIRTUAL PRIVATENETWORK (VPN) TUNNELThis appendix tells you how to create a VPN tunnel from a client workstation,using the appropriate client software.Creating a VirtualPrivate Network (VPN)TunnelThe Dual 56K LAN Modem’s support of the PPTP protocol allows you to establish aVirtual Private Network tunnel between a workstation attached to the LANModem and a remote private network LAN. In order to establish the tunnel,however, you must have the appropriate client software installed on yourworkstation, and a tunnel server must be in place on the remote LAN. The LANModem cannot initiate or terminate a VPN tunnel.Since the LAN Modem does not terminate the VPN tunnel, multiple tunnels can besupported at the same time through a single ISP connection.Before You Begin Before you can initiate a VPN tunnel to a remote private network, you (or anetwork administrator) must already have done the following: On the Remote Private Network (“Server”) Side: Set up a PPTP tunnel server (often called a tunnel “terminator”) on theremote private network. Examples would be a Windows NT server, version4.0 or later, with Service Pack 3 or greater and RAS (Remote Access Service)installed; or 3Com’s NETBuilder, PathBuilder, or Total Control Hub. Installed any networking protocols required for the private network on thePPTP tunnel server (such as IP, IPX, and NetBeui). On the LAN Modem (“Client”) Side: Configured an Internet Service Provider profile for access to the Internet inthe LAN Modem Installed PPTP tunnel client software on each workstation that will initiate aVPN tunnel to the private network. Examples of client tunnel softwareinclude: For Windows 95/98: Windows Dial-Up Networking version 1.3 orhigher (these include the required software VPN adapter) For Windows NT/2000: Windows NT Operating System with ServicePack 3 For Macintosh: Network TeleSystem’s TunnelBuilder™ VPN software Installed any network protocols required for the private network on eachworkstation that will establish a VPN tunnel.