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51

3.4.2 UPnP

The

UPnP

(Universal Plug and Play) protocol is supported to bring to network connected

devices the ease of installation and configuration which is already available for directly

connected PC peripherals with the existing Windows 'Plug and Play' system. For NAT routers,

the major feature of UPnP on the router is “NAT Traversal”. This enables applications inside

the firewall to automatically open the ports that they need to pass through a router. It is more

reliable than requiring a router to work out by itself which ports need to be opened. Further,

the user does not have to manually set up port mappings or a DMZ.

UPnP is available on

Windows XP

and the router provide the associated support for MSN Messenger to allow full

use of the voice, video and messaging features.

Enable UPNP Service

Accordingly, you can enable either the

Connection Control

Service

or

Connection Status Service

.

After setting

Enable UPNP Service

setting, an icon of

IP Broadband Connection on Router

on Windows XP/Network Connections will appear. The connection status and control status

will be able to be activated. The NAT Traversal of UPnP enables the multimedia features of

your applications to operate. This has to manually set up port mappings or use other similar

methods. The screenshots below show examples of this facility.

The UPnP facility on the router enables UPnP aware applications such as MSN Messenger to

discover what are behind a NAT router. The application will also learn the external IP address

and configure port mappings on the router. Subsequently, such a facility forwards packets from

the external ports of the router to the internal ports used by the application.

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The reminder as regards concern about Firewall and UPnP

Can't work with Firewall Software

Enabling firewall applications on your PC may cause the UPnP function not working

properly. This is because these applications will block the accessing ability of some network

ports.

Security Considerations

Activating the UPnP function on your network may incur some security threats. You should

consider carefully these risks before activating the UPnP function.

¾

Some Microsoft operating systems have found out the UPnP weaknesses and hence

you need to ensure that you have applied the latest service packs and patches.

¾

Non-privileged users can control some router functions, including removing and

adding port mappings.

The UPnP function dynamically adds port mappings on behalf of some UPnP-aware

applications. When the applications terminate abnormally, these mappings may not be

removed.

3.5 Wireless LAN

This function is used for “n” models.

3.5.1 Basic Concepts

Over recent years, the market for wireless communications has enjoyed tremendous growth.

Wireless technology now reaches or is capable of reaching virtually every location on the

surface of the earth. Hundreds of millions of people exchange information every day via

wireless communication products. The Vigor “n” model, a.k.a. Vigor wireless router, is

designed for maximum flexibility and efficiency of a small office/home. Any authorized staff

can bring a built-in WLAN client PDA or notebook into a meeting room for conference

without laying a clot of LAN cable or drilling holes everywhere. Wireless LAN enables high

mobility so WLAN users can simultaneously access all LAN facilities just like on a wired

LAN as well as Internet access

The Vigor wireless routers are equipped with a wireless LAN interface compliant with the

standard IEEE 802.11n draft 2 protocol. To boost its performance further, the Vigor Router is

also loaded with advanced wireless technology to lift up data rate up to 300 Mbps*. Hence,

you can finally smoothly enjoy stream music and video.

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Note

:

*

The actual data throughput will vary according to the network conditions and

environmental factors, including volume of network traffic, network overhead and

building materials.

In an Infrastructure Mode of wireless network, Vigor wireless router plays a role as an Access

Point (AP) connecting to lots of wireless clients or Stations (STA). All the STAs will share the

same Internet connection via Vigor wireless router. The

General Settings

will set up the

information of this wireless network, including its SSID as identification, located channel etc.

Security Overview

Real-time Hardware Encryption:

Vigor Router is equipped with a hardware AES encryption

engine so it can apply the highest protection to your data without influencing user experience.

Complete Security Standard Selection:

To ensure the security and privacy of your wireless

communication, we provide several prevailing standards on market.

WEP (Wired Equivalent Privacy) is a legacy method to encrypt each frame transmitted via

radio using either a 64-bit or 128-bit key. Usually access point will preset a set of four keys

and it will communicate with each station using only one out of the four keys.

WPA (Wi-Fi Protected Access), the most dominating security mechanism in industry, is

separated into two categories: WPA-personal or called WPA Pre-Share Key (WPA/PSK), and

WPA-Enterprise or called WPA/802.1x.

In WPA-Personal, a pre-defined key is used for encryption during data transmission. WPA

applies Temporal Key Integrity Protocol (TKIP) for data encryption while WPA2 applies AES.

The WPA-Enterprise combines not only encryption but also authentication.

Since WEP has been proved vulnerable, you may consider using WPA for the most secure

connection. You should select the appropriate security mechanism according to your needs.

No matter which security suite you select, they all will enhance the over-the-air data

protection and /or privacy on your wireless network. The Vigor wireless router is very flexible

and can support multiple secure connections with both WEP and WPA at the same time.

Separate the Wireless and the Wired LAN- WLAN Isolation

enables you to isolate your

wireless LAN from wired LAN for either quarantine or limit access reasons. To isolate means

neither of the parties can access each other. To elaborate an example for business use, you

may set up a wireless LAN for visitors only so they can connect to Internet without hassle of

the confidential information leakage. For a more flexible deployment, you may add filters of

MAC addresses to isolate users’ access from wired LAN.

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Manage Wireless Stations - Station List

will display all the station in your wireless network

and the status of their connection.

Below shows the menu items for Wireless LAN.

3.5.2 General Setup

By clicking the

General Settings

, a new web page will appear so that you could configure the

SSID and the wireless channel. Please refer to the following figure for more information.

Enable Wireless LAN

Check the box to enable wireless function.

Mode

At present, the router can connect to Mixed (11b+11g),

11g Only, 11b Only, Mixed (11g+11n), 11n Only and

Mixed (11b+11g+11n) stations simultaneously. Simply

choose Mix (11b+11g+11n) mode.

SSID

Means the identification of the wireless LAN. SSID can be

any text numbers or various special characters. The default

SSID is "DrayTek". We suggest you to change it.

Channel

Means the channel of frequency of the wireless LAN. The

default channel is 6. You may switch channel if the

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selected channel is under serious interference. If you have

no idea of choosing the frequency, please select Auto to let

system determine for you.

Packet-OVERDRIVE

This feature can enhance the performance in data

transmission about 40%* more (by checking

Tx Burs

t). It

is active only when both sides of Access Point and Station

(in wireless client) invoke this function at the same time.

That is, the wireless client must support this feature and

invoke the function, too.

Note:

Vigor N61 wireless adapter supports this function.

Therefore, you can use and install it into your PC for

matching with Packet-OVERDRIVE (refer to the

following picture of Vigor N61 wireless utility window,

choose

Enable

for

TxBURST

on the tab of

Option

).

Hide SSID

Check it to prevent from wireless sniffing and make it

harder for unauthorized clients or STAs to join your

wireless LAN. Depending on the wireless utility, the user

may only see the information except SSID or just cannot

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