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VPN 3000 Concentrator Series User Guide
CHAPTER
1
Using the VPN 3000 Concentrator Series Manager
The VPN 3000 Concentrator Series Manager is an HTML-based interface that let s you configure,
administer, monitor, and manage the VPN 3000 Concentrator with a standard Web browser. To use it,
you need only to connect to the VPN Concentrator using a PC and browser on the same pr ivate network
with the VPN Concentrator.
The Manager uses the standard Web client / server protocol, HTTP (Hypertext Transfer Protocol), which
is a cleartext protocol. However, you can also use the Manager in a secure, encrypted H TTP connection
over SSL (Secure Sockets Layer) protocol, which is known as HTTPS.
•To use a cleartext HTTP connection, see Connecting to the VPN Concentrator using HTTP.
•To use HTTP over SSL (HTTPS) with the Manager:
1The first time, connect to the Manager using HTTP, and
2Install an SSL certificate in the browser; see Installing the SSL certificate in your browser on page
1-3.
Once the SSL certificate is installed, you can connect directly using HTTPS; see Connecting to the
VPN Concentrator using HTTPS on page 1-17.

Browser requirements

The VPN Concentrator Manager requires either Microsoft Internet Explore r version 4.0 or higher, or
Netscape Navigator / Communicator version 4.0 or higher. For best results, we recommend In ternet
Explorer. Whatever browser and version you use, install the latest patches and service packs for it.

JavaScript

Be sure JavaScript is enabled in the browser. Check these settings:
•Internet Explorer 4.0:
–On the View menu, select Internet Options.
–On the Security tab, click Custom (for expert users) then click Settings.
–In the Security Settings window, scroll down to Scripting.
–Click Enable under Scripting of Java applets.
–Click Enable under Active scripting.