PROLiNK Hurricane 9000G - Manual (Page 5)

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Chapter 1
Introduction
1.1 An Overview of the ADSL Router
ADSL VPN Firewall Modem/Router provides a high-speed Ethernet port for high-speed Internet browsing.
It can support downstream transmission rates of up to 8Mbps and upstream transmission rates of up to
1024Kbps. It is compliant with Multi-Mode standard (ANSI T1.413, Issue 2; G.dmt (G.992.1); G.lite
(G992.2); G.hs (G994.1)).
The product supports PPPoA (RFC 2364 – PPP (Point-to-Point Protocol) over ATM Adaptation Layer 5),
RFC 1483 encapsulation over ATM (bridged or routed), PPP over Ethernet (RFC 2516), and IPoA
(RFC1577) to establish a connection with ISP. The product also supports VC-based and LLC-based
multiplexing.
It is the perfect solution to connect a small group of PCs to a high-speed broadband Internet connection.
Multi-users can have high-speed Internet access simultaneously.
This product also serves as an Internet firewall, protecting your network from being accessed by outside
users. Not only provide the natural firewall function (Network Address Translation, NAT), it also provides
rich firewall features to secure user’s network. All incoming data packets are monitored and filtered.
Besides, it can also be configured to block internal users from accessing to the Internet.
The product provides two levels of security support. First, it masks LAN users’ IP addresses which are
invisible to outside users on the Internet, making it much more difficult for a hacker to target a machine on
your network. Secondly, it can block and redirect certain ports to limit the services that outside users can
access. For example, to ensure that games and other Internet applications will run properly, user can
open some specific ports for outside users to access internal services in network.
Integrated DHCP (Dynamic Host Control Protocol) services, client and server, allow multiple users to get
their IP addresses automatically on boot up from the product. Simply set local machines as a DHCP
client to accept a dynamically assigned IP address from DHCP server and reboot. Each time local
machine is powered up; the router will recognize it and assign an IP address to instantly connect it to the
LAN.
For advanced users, Virtual Service function allows the product to provide limited visibility to local
machines with specific services for outside users. An ISP (Internet Service Providers) provided IP
address can be set to the product and then specific services can be rerouted to specific computers on the
local network. For instance, a dedicated web server can be connected to the Internet via the product and
then incoming requests for HTML that are received by the product can be rerouted to the dedicated local
web server, even though the server now has a different IP address. In this example, the product is on the
Internet and vulnerable to attacks, but the server is protected.
Virtual Server can also be used to re-task services to multiple servers. For instance, the product can be
set to allow separated FTP, Web, and Multiplayer game servers to share the same Internet-visible IP
address while still protecting the servers and LAN users from hackers.