VoIP/(802.11g) ADSL2+ (VPN) Firewall Router 
Chapter 1: Introduction 
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directly for auto detection. 
Multi-Protocol to Establish a Connection
It supports PPPoA (RFC 2364 - PPP 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 the ISP. The product also supports VC-based and LLC-based multiplexing. 
Quick Installation Wizard 
It supports a WEB GUI page to install this device quickly. With this wizard, end users can enter the 
information easily which they get from their ISP, then surf the Internet immediately. 
Universal Plug and Play (UPnP) and UPnP NAT Traversal
This protocol is used to enable simple and robust connectivity among stand-alone devices 
and 
PCs from many different vendors. It makes network simple and affordable for users. UPnP 
architecture leverages TCP/IP and the Web to enable seamless proximity networking in addition to 
control and data transfer among networked devices. With this feature enabled, users can now 
connect to Net meeting or MSN Messenger seamlessly. 
Network Address Translation (NAT)
Allows multi-users to access outside resources such as the Internet simultaneously with one IP 
address/one Internet access account. Many application layer gateway (ALG) are supported such as 
web browser, ICQ, FTP, Telnet, E-mail, News, Net2phone, Ping, NetMeeting, IP phone and others. 
SOHO Firewall Security with DoS and SPI
Along with the built-in NAT natural firewall feature, the router also provides advanced hacker 
pattern-filtering protection. It can automatically detect and block Denial of Service (DoS) attacks. 
The router is built with Stateful Packet Inspection (SPI) to determine if a data packet is allowed 
through the firewall to the private LAN. 
Domain Name System (DNS) Relay
It provides an easy way to map the domain name (a friendly name for users such as 
www.yahoo.com) and IP address. When a local machine sets its DNS server with this router’s IP 
address, every DNS conversion request packet from the PC to this router will be forwarded to the 
real DNS in the outside network. 
Dynamic Domain Name System (DDNS)
The Dynamic DNS service allows you to alias a dynamic IP address to a static hostname. This 
dynamic IP address is the WAN IP address. For example, to use the service, you must first apply for 
an account from a DDNS service like http://www.dyndns.org/. More than 5 DDNS servers are 
supported. 
Quality of Service (QoS)
QoS gives you full control over which types of outgoing data traffic 
should be given priority by the router, ensuring important data like gaming packets, customer 
information, or management information move through the router ay lightning speed, even under 
heavy load. The QoS features are configurable by source IP address, destination IP address, 
protocol, and port. You can throttle the speed at which different types of outgoing data pass through 
the router, to ensure P2P users don’t saturate upload bandwidth, or office browsing doesn’t bring 
client web serving to a halt. In addition, or alternatively, you can simply change the priority of 
different types of upload data and let the router sort out the actual speeds. 
Virtual Server (“port forwarding”)
Users can specify some services to be visible from outside users. The router can detect incoming 
service requests and forward either a single port or a range of ports to the specific local computer to 
handle it. For example, a user can assign a PC in the LAN acting as a WEB server inside and 
expose it to the outside network. Outside users can browse inside web servers directly while it is 
protected by NAT. A DMZ host setting is also provided to a local computer exposed to the outside 
network, Internet.