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Vigor2920 Series User’s Guide
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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Tel: +44 (0)1245 808195
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Page 62 / 251
Vigor2920 Series User’s Guide
52
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.
VoIPon
www.voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 63 / 251
Vigor2920 Series User’s Guide
53
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.
VoIPon
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Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 64 / 251
Vigor2920 Series User’s Guide
54
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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Page 65 / 251
Vigor2920 Series User’s Guide
55
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
VoIPon
www.voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299

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