Nortel 400, Using Manual

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Using the BayStack Instant Internet Management Software Version 7.11
Chapter 1
Introduction
The BayStack Instant Internet unit is a network gateway system that enables you
to access the Internet safely and efficiently, providing management tools that
allow you to track and block user activities. The Instant Internet unit connects any
type of LAN to the Internet using only a single IP address, thereby saving you
time and money.
This chapter provides information about the types of network environments in
which Instant Internet works as well as the services that Instant Internet provides
for your network.
How Instant Internet can function in your network
Before you install the Instant Internet unit, you should understand your network
environment and how the unit functions in the network.
Instant Internet can function in your network in three ways. It can:
• Provide security – You can isolate your network from the Internet to help
ensure network security. You do this for three reasons:
— To prevent Internet users from outside your organization from seeing
internal IP addresses.
— To protect your network from being accessed by intruders or hackers.
— To permit remote LANs to communicate with your LAN over a virtual
private network (VPN) using IP security (IPsec).
• Control Internet access – You can restrict your users’ access by date and
time, and you can restrict access to certain sites or news groups.
• Ease administration – Instant Internet allows you to adopt the users and
groups you are already using from your directory services.