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Vigor2920 Series User’s Guide
146
4.8.4 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.
VoIPon
www.voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 157 / 251
Vigor2920 Series User’s Guide
147
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.
VoIPon
www.voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 158 / 251
Vigor2920 Series User’s Guide
148
4.8.5 IGMP
IGMP is the abbreviation of
Internet Group Management Protocol
. It is a communication
protocol which is mainly used for managing the membership of Internet Protocol multicast
groups.
Enable IGMP Proxy
Check this box to enable this function. The application of
multicast will be executed through WAN port. In addition, such
function is available in NAT mode.
Enable IGMP Snooping
Check this box to enable this function. Multicast traffic will be
forwarded to ports that have members of that group. Disabling
IGMP snooping will make multicast traffic treated in the same
manner as broadcast traffic.
Group ID
This
field displays the ID port for the multicast group. The
available range for IGMP starts from 224.0.0.0 to
239.255.255.254.
P1 to P4
It indicates the LAN port used for the multicast group.
Refresh
Click this link to renew the working multicast group status.
If you check Enable IGMP Proxy, you will get the following page. All the multicast groups
will be listed and all the LAN ports (P1 to P4) are available for use.
4.8.6 Wake on LAN
A PC client on LAN can be woken up by the router it connects. When a user wants to wake up
a specified PC through the router, he/she must type correct MAC address of the specified PC
on this web page of
Wake on LAN
of this router.
In addition, such PC must have installed a network card supporting WOL function. By the
way, WOL function must be set as “Enable” on the BIOS setting.
VoIPon
www.voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 159 / 251
Vigor2920 Series User’s Guide
149
Wake by
Two types provide for you to wake up the binded IP. If you
choose Wake by MAC Address, you have to type the correct
MAC address of the host in MAC Address boxes. If you choose
Wake by IP Address, you have to choose the correct IP address.
IP Address
The IP addresses that have been configured in
Firewall>>Bind
IP to MAC
will be shown in this drop down list. Choose the IP
address from the drop down list that you want to wake up.
MAC Address
Type any one of the MAC address of the bound PCs.
Wake Up
Click this button to wake up the selected IP. See the following
figure. The result will be shown on the box.
VoIPon
www.voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 160 / 251
Vigor2920 Series User’s Guide
150
4.9 VPN and Remote Access
A Virtual Private Network (VPN) is the extension of a private network that encompasses links
across shared or public networks like the Internet. In short, by VPN technology, you can send
data between two computers across a shared or public network in a manner that emulates the
properties of a point-to-point private link.
Below shows the menu items for VPN and Remote Access.
4.9.1 Remote Access Control
Enable the necessary VPN service as you need. If you intend to run a VPN server inside your
LAN, you should disable the VPN service of Vigor Router to allow VPN tunnel pass through,
as well as the appropriate NAT settings, such as DMZ or open port.
4.9.2 PPP General Setup
This submenu only applies to PPP-related VPN connections, such as PPTP, L2TP, L2TP over
IPSec.
Dial-In PPP
Select this option to force the router to authenticate dial-in
VoIPon
www.voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299

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