User`s guide

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Access and Application Support

Many advanced applications are provided by the RoamAbout R1, such as:

• Flexible LAN Access

The RoamAbout R1 provides connectivity to 10/100 Mbps wired devices, as well as 11

Mbps wireless mobile users. The wireless interface makes it easy to create a network in

difficult-to-wire environments, and to provide quick access to databases for wireless users.

• Internet Access

The RoamAbout R1 supports Internet access through an xDSL, Cable, ISDN or PSTN

connection. Many DSL providers use PPPoE to establish communications with end users.

The RoamAbout R1 includes a built-in client for PPPoE which eliminates the need to install

this service on your computer.

• Shared IP Address

The RoamAbout R1 provides Internet access for up to 32 users with a shared IP address.

Multiple users on your network can browse the Web at the same time using only one ISP

account.

• Virtual Server

If you have a fixed IP address, you can set up the RoamAbout R1 to act as a virtual host for

network address translation. Remote users can access various services at your site using a

constant IP address. Then, depending on the requested service (or port number), the

RoamAbout R1 can route the request to the appropriate server (at another internal IP

address). This secures your network from direct attack by hackers, and provides more

flexible management by allowing you to change internal IP addresses without affecting

outside access to your network.

• User-Definable Application Sensing Tunnel

You can define special applications that require multiple connections such as Internet

gaming, videoconferencing, and Internet telephony. The RoamAbout R1 senses the

application type and opens a multi-port tunnel for it.

• DMZ Host Support

DMZ (Demilitarized Zone) allows you to open up a client PC for two-way unrestricted

Internet access. For example, you would use this feature if you have a client PC that cannot

run an Internet application properly from behind the NAT firewall or after configuring the

special applications feature. Using this feature creates a security risk and should only be

used as a last resort.