PROLiNK Hurricane 5200C/5201

ADSL2+ Modem / Router

User Manual

Page 31 of 59

8.6

DMZ

A DMZ (Demilitarized Zone) allows a single computer on your LAN to expose ALL of its

ports to the Internet. Enter the IP address of that computer as a DMZ (Demilitarized Zone)

host with unrestricted Internet access. When doing this, the DMZ host is no longer behind

the firewall.

Fields in this page:

Field

Description

Enable DMZ

Check this item to enable the DMZ feature.

DMZ Host IP

Address

IP address of the local host. This feature sets a local host to be exposed to the

Internet.

Function buttons in this page:

Apply Changes

Click to save the setting to the configuration.

PROLiNK Hurricane 5200C/5201

ADSL2+ Modem / Router

User Manual

Page 32 of 59

8.7

IGMP PROXY CONFIGURATION

Multicasting is useful when the same data needs to be sent to more than one hosts. Using

multicasting, as opposed to sending the same data to the individual hosts uses less

network bandwidth. The multicast feature also enables you to receive multicast video

stream from multicast servers.

IP hosts use Internet Group Management Protocol (IGMP) to report their multicast group

memberships to neighboring routers. Similarly, multicast routers use IGMP to discover

which of their hosts belong to multicast groups. Hurricane 5200C/5201 supports IGMP

proxy that handles IGMP messages. When enabled, this modem/router acts as a proxy for

a LAN host making requests to join and leave multicast groups, or a multicast router

sending multicast packets to multicast group on the WAN side.

When a host wishes to join a multicast group, it sends IGMP REPORT message to

Hurricane 5200C’s IGMP downstream interface. The proxy sets up a multicast route for the

interface and host requesting the video content. It then forwards the Join to the upstream

multicast router. The multicast IP traffic will then be forwarded to the requesting host. On a

leave, the proxy removes the route and then forwards the leave to the upstream multicast

router.

The IGMP Proxy page allows you to enable multicast on WAN and LAN interfaces. The

LAN interface is always served as a downstream IGMP proxy, and you can configure one

of the available WAN interfaces as the upstream IGMP proxy.

±

Upstream

: The interface that IGMP requests from hosts (LAN) is sent to the

multicast router.

±

Downstream

: The interface data from the multicast router are sent to hosts (LAN)

in the multicast group database.

PROLiNK Hurricane 5200C/5201

ADSL2+ Modem / Router

User Manual

Page 33 of 59

Fields in this page:

Field

Description

IGMP Proxy

Enable/disable IGMP proxy feature

Proxy Interface

The upstream WAN interface is selected here.

Function buttons in this page:

Apply Changes

Click to save the setting to the configuration.

Undo

Discard your settings.

PROLiNK Hurricane 5200C/5201

ADSL2+ Modem / Router

User Manual

Page 34 of 59

8.8

UPnP CONFIGURATION

The modem/router supports a control point for Universal Plug and Play (UPnP) version 1.0,

and supports two key features:

NAT Traversal

and

Device Identification

. This feature

requires one active WAN interface. In addition, the host should support this feature. In the

presence of multiple WAN interfaces, select an interface on which the incoming traffic is

present.

With NAT Traversal, when UPnP command is received to open ports in NAT, the

application translates the request into system commands to open the ports in NAT and the

firewall.

For Device Identification, the application will send a description of the modem/router as a

control point back to the host making the request.

PROLiNK Hurricane 5200C/5201

ADSL2+ Modem / Router

User Manual

Page 35 of 59

Fields in this page

Field

Description

UPnP

Enable/disable UPnP feature.

WAN Interface

Select WAN interface that will use UPnP from the drop-down list box.

Function buttons in this page:

Apply Changes

Click to save the setting to the system configuration.

8.9

RIP CONFIGURATION

RIP (Routing Information Protocol) is an Internet protocol that you can set up to share

routing table information with other routing devices on your LAN, at your ISP’s location, or

on remote networks connected to your LAN via ADSL line.

Most home or small office networks do not need to use RIP; they have only one router,

such as the ADSL Router, and one path to an ISP. In this case, there is no need to share

routes, because all Internet data from the network is sent to the same ISP gateway.

You may want to configure RIP if any of the following circumstances apply to your network:

−

Your home network setup includes an additional router or RIP-enabled PC (other

than the ADSL Router). The ADSL Router and the router will need to communicate

via RIP to share their routing tables.

−

Your network connects via the ADSL line to a remote network, such as a corporate

network. In order for your LAN to learn the routes used within your corporate

network, they should both be configured with RIP.

−

Your ISP requests that you run RIP for communication with devices on their

network.