Dns Proxy - ZyXEL Communications Vantage Service Gateway VSG-1200 V2 User Manual

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 e-mail
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.
NAT (Network Address Translation)
NAT (RFC 1631) is the translation of the IP address of a host in a packet, for example, the
source address of an outgoing packet, used within one network to a different IP address known
within another network.
The VSG automatically performs NAT on the LAN. You can also set the VSG to perform
NAT on the WAN for VPN (IPSec and PPTP) connections.
Static Route
Static routes tell the VSG how to forward IP traffic when you configure the TCP/IP
parameters manually and disable NAT.
Chapter 1 Getting to Know Your VSG
VSG-1200 V2 User's Guide
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