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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.
Chapter 5 :
Advanced Setup
BoB
TM
Advanced Setup Method
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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
Chapter 5 :
Advanced Setup
BoB
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Advanced Setup Method
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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.
Chapter 5 :
Advanced Setup
BoB
TM
Advanced Setup Method
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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.
Chapter 5 :
Advanced Setup
BoB
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Advanced Setup Method
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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.
Chapter 5 :
Advanced Setup
BoB
TM
Advanced Setup Method

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