Applications; Internet Access For Lan Networks - ZyXEL Communications VSG-1200 User Manual

VSG-1200 Vantage Service Gateway
DHCP (Dynamic Host Configuration Protocol) allows the individual computers (DHCP clients) to obtain TCP/IP
configuration at start-up from a centralized DHCP server. The VSG has built-in DHCP server capability. It can
assign IP addresses, an IP default gateway and DNS servers to DHCP clients. The VSG can also act as a surrogate
DHCP server (DHCP Relay) where it relays IP address assignment from the actual real DHCP server to the DHCP
clients.
RADIUS (Remote Authentication Dial-In User Service) Client
The VSG allows you to maintain a central subscriber database on an external RADIUS server. Subscriber
accounting and authentication is then done through the external RADIUS server.
Built-in Authentication and Local Subscriber Database
The VSG allows you to maintain a subscriber database on the VSG without setting up an external RADIUS server.
Subscriber accounting and authentication are done using the local subscriber database.
Accounting
Accounting can be done using an external RADIUS server or the built-in accounting feature.
Local Content and Advertising Links
Once connected to the network, the VSG can redirect the subscriber to a specified web site and display advertising
links. This can be a source of extra online advertising revenues and increased business exposure.
Access Control (Walled Garden)
With the walled garden feature, subscribers are able to access predetermined web sites without logging in. The
VSG blocks full Internet access until the subscribers log in.
E-mail Forwarding
The VSG is able to forward and retrieve e-mail messages when the subscriber's default email server is down or
behind a firewall.
DNS Proxy
With DNS proxy, the VSG provides DNS redirection when a subscriber's configured DNS server is behind a
firewall or located in a private Intranet.
Subscriber Login Page Customization
You can customize the subscriber login page according to your business needs. The advanced settings allow you to
include welcome messages, a company logo and basic formatting.
Local Console Management
The VSG provides a console port for local management.
Web Configurator Management
The VSG comes with an embedded web-based configurator. It offers advanced management features and allows
you to manage the VSG remotely using Internet Explorer (version 4.0 or above) or Netscape (version 6.0 or later).
Upgrade Firmware
The firmware of the VSG can be upgraded via the web configurator or the SMT menu.
Ease of Installation
Your VSG is designed for quick, intuitive and easy installation. It can be mounted on a desktop or standard 19"
rack.
1.3

Applications

The following sections describe network application examples in which the VSG is used.
1.3.1

Internet Access for LAN Networks

With a broadband service account set up, the VSG allows the attached computers to enjoy high speed Internet
access.
1-2 Getting to Know Your VSG