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Special Applications

Some applications, such as Internet gaming, video conferencing, Internet telephony and others, require

multiple connections. These applications cannot work with Network Address Translation (NAT) enabled. If you

need to run applications that require multiple connections, use the following screen to specify the additional

public ports to be opened for each application.

Specify the public port number normally associated with an application in the Trigger Port field. Set the

protocol type to TCP or UDP, and then enter the ports that the application requires. The ports may be in the

format 7, 11, 57, or in a range, e.g., 72-96, or a combination of both, e.g., 7, 11, 57, 72-96.

Popular applications requiring multiple ports are listed in the Popular Applications field. From the drop-down list,

choose the application and then choose a row number to copy this data into.

Note: Choosing a row that already contains data will overwrite the current settings.

Example:

ID

Trigger

Trigger Port

Public Port Public

Comment Type

1

6112

UDP

6112

Battle.net

2

28800

TCP

2300 - 2400

MSN Game Zone

For a full list of ports and the services that run on them, see www.iana.org/assignments/port-numbers.

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NAT Mapping Table

NAT Mapping Table displays the current NAPT address mappings NAT address mappings are listed 20 lines per

page, click the control buttons to move forwards and backwards As the NAT mapping is dynamic, a Refresh

button is provided to refresh the NAT Mapping Table with the most up-to-date values.

The content of the NAT Mapping Table is described as follows:

Protocol - protocol of the flow

Local IP - local (LAN) host’s IP address for the flow

Local Port - local (LAN) host’s port number for the flow

Pseudo IP - translated IP address for the flow

Pseudo Port - translated port number for the flow

Peer IP - remote (WAN) host’s IP address for the flow

Peer Port - remote (WAN) host’s port number for the flow

•

•

•

•

•

•

•

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Route

These pages define routing related parameters, including static routes and Routing Information Protocol (RIP)

parameters.

Static Route Parameters

Parameter Description

Index:

Displays the number of the route.

Network Address:

Displays the IP address of the remote computer for which to set a static route.

Subnet Mask:

Displays the subnet mask of the remote network for which to set a static route.

Gateway:

Displays the WAN IP address of the gateway to the remote network.

Configure:

Allows you to modify or delete configuration settings.

Click Add or Edit to display the following page and add a new static route to the list.

Index:

Displays the number of the route.

Network Address:

Enter the IP address of the remote computer for which to set a static route.

Subnet Mask:

Enter the subnet mask of the remote network for which to set a static route.

Gateway:

Enter the WAN IP address of the gateway to the remote network.

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RIP Parameter

The device supports RIP v1 and v2 to dynamically exchange routing information with adjacent routers.

Parameter Description

General RIP Parameters

RIP mode: Globally enables or disables RIP

Auto summary:

If Auto summary is disabled, then RIP

packets will include sub-network information from

all sub-net works connected to the ADSL Router.

If enabled, this sub-network information will be

summarized to one piece of information covering all

sub-networks.

Table of current Interface RIP parameter:

Interface:

The WAN interface to be configured.

Operation Mode:

Disable: RIP disabled on this

interface.

Enable:

RIP enabled on this interface.

Silent:

Listens for route broadcasts and updates its

route table.It does not participate in sending route

broadcasts.

Version:

Sets the RIP version to use on this interface.

Poison Reverse:

A method for preventing loops that

would cause endless retransmission of data traffic.

Authentication Required:

None: No authentication.

Password:

A password authentication key is

included in the packet. If this does not match what is

expected, the packet will be discarded.

This method provides very little security as it is

possible to learn the authentication key by watching

RIP packets.

MD5:

An algorithm that is used to verify data integrity

through the creation of a 128-bit message digest from

data input (which may be a message of any length)

that is claimed to be as unique to that specific data as

a fingerprint is to a specific individual.

Authentication Code:

Password or MD5

Authentication key.

RIP sends routing-update messages at regular

intervals and when the network topology changes.

When a router receives a routing update that includes

changes to an entry, it updates its routing table to

ref lect the new route. RIP routers maintain only the

best route to a destination. After updating its routing

table, the router immediately begins transmitting

routing updates to inform other network routers of

the change.

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Routing Table

Parameter Description

F lags:

Indicates the route status:

C = Direct connection on the same subnet.

S = Static route.

R = RIP (Routing Information Protocol) assigned

route.

I = ICMP (Internet Control Message Protocol)

Redirect route .

Network Address:

Destination IP address.

Netmask:

The subnetwork associated with the

destination.

This is a template that identifies the address bits in

the destination address used for routing to specific

subnets. Each bit that corresponds to a ‘1’ is part of

the subnet mask number; each bit that corresponds

to ‘0’ is part of the host number.

Gateway:

The IP address of the router at the next

hop to which frames are forwarded.

Interface:

The local interface through which the next

hop of this route is reached.

Metric:

When a router receives a routing update that

contains a new or changed destination network entry,

the router adds 1 to the metric value indicated in the

update and enters the network in the routing table.

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