Watchguard Firebox FireboxTM System 4.6 User Manual page 152

Preparing the client computers
• Public IP address
Remote host operating system
The remote client must be running Windows and have the most recent MSDUN
(Microsoft Dial-Up Networking) upgrades installed and may need other extensions
and updates for proper configuration. Currently, Remote User VPN with PPTP
requires these upgrades according to platform:
Due to security concerns, RUVPN does not work with earlier versions of MSDUN.
If you install new software, you may have to reinstall the upgrades. The
upgrades can be found at the Microsoft Download Center Web site at:
http://www.microsoft.com/downloads/search.asp.
You may need the Windows installation CD to prepare the client
computers.
Windows 95/98 platform preparation
Install the MSDUN upgrade on the remote client. The client is available
free from Microsoft. For Windows 95, use DUN 1.3. For Windows 98, use
DUN 4.0.
For 128-bit encryption, install the MSDUN upgrade 128-bit enhancement.
This level of encryption is available for installations approved by
WatchGuard and/or the U.S. government for strong encryption.
From the Windows Desktop:
Select Start => Settings => Control Panel. Double-click Network.
1
2 Verify that Client for Microsoft Networks is installed.
If Client for Microsoft Networks is not installed, you must install it. For instructions, see
"Installing Client for Microsoft Networks" on page 143.
3 Click the Identification tab.
4 Enter a name for the remote client.
This must be a unique name on the remote network.
142
Encryption Platform
Both Windows 95
Both Windows 98
Base Windows 98 SE
Strong Windows 98 SE
Base Windows NT
Strong Windows NT
Base Windows 2000
Strong Windows 2000
*40-bit encryption is the default for Windows 2000. If you are
upgrading from Windows 95 or 98, in which you had set strong
encryption, Windows 2000 will automatically define strong
encryption for the new installation.
Application
DUN 1.3
DUN 4.0
Second Edition
DUN 128-bit
40-bit SP4
128-bit SP4
40-bit SP4*
128-bit SP4