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8.1.1
Add Route
Field
Meaning
Destination
IP
Address
This is the destination subnet IP address
IP Subnet Mask
It is the destination IP addresses based on above
destination subnet IP
Gateway IP Address
This is the gateway IP address to which packets are
to be forwarded
Metric
It represents the cost of transmission for routing
purposes. The number need not be precise, but it
must be between 1 and 15
Announced in RIP
This parameter determines if the Prestige will include
the route to the remote node in its RIP broadcasts.
Set
“Yes”, it is kept private and is not included in RIP
broadcasts. Set “No”, the remote node will be
propagated to other hosts through RIP broadcasts
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8.2
NAT
The NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP
address of a host in a packet. The default setting is
Dynamic NAPT
. It provides
dynamic Network Address Translation capability between LAN and multiple WAN
connections, and the LAN traffic is routed to appropriate WAN connections based on
the destination IP addresses and Route Table. This eliminates the need for the static
NAT session configuration between multiple LAN clients and multiple WAN
connections.
Field
Meaning
Virtual Circuit
VPI (Virtual Path Identifier) and VCI (Virtual Channel
Identifier) define a virtual circuit. There are eight
groups of PVC can be defined and used
Number of IPs
User can select Single or Multiple
8.2.1
DMZ
The DMZ Host is a local computer exposed to the Internet. When setting a
particular internal IP address as the DMZ Host, all incoming packets will be checked
by the Firewall and NAT algorithms then passed to the DMZ host, when a packet
received does not use a port number used by any other Virtual Server entries.
Field
Meaning
DMZ
Disabled:
As set in default setting, it disables the
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DMZ function.
Enabled:
It activates your DMZ function.
DMZ Host Address
Give a static IP address to the DMZ Host when
Enabled radio button is checked. Be aware that this
IP will be exposed to the WAN/Internet.
8.3
Virtual Server
In TCP/IP and UDP networks a port is a 16-bit number used to identify which
application program (usually a server) incoming connections should be delivered to.
Some ports have numbers that are pre-assigned to them by the IANA (the Internet
Assigned Numbers Authority), and these are r
eferred to as “well
-
known ports”
.
Servers follow the well-known port assignments so clients can locate them.
If you wish to run a server on your network that can be accessed from the WAN
(i.e. from other machines on the Internet that are outside your local network), or
any application that can accept incoming connections (e.g. Peer-to-peer/P2P
software such as instant messaging applications and P2P file-sharing applications)
and are using NAT (Network Address Translation), then you will usually need to
configure your router to forward these incoming connection attempts using specific
ports to the PC on your network running the application. You will also need to use
port forwarding if you want to host an online game server.
The reason for this is that when using NAT, your publicly accessible IP address will
be used by and point to your router, which then needs to deliver all traffic to the
private IP addresses used by your PCs. Please see the WAN configuration section of
this manual for more information on NAT.
The device can be configured as a virtual server so that remote users accessing
services such as Web or FTP services via the public (WAN) IP address can be
automatically redirected to local servers in the LAN network. Depending on the
requested service (TCP/UDP port number), the device redirects the external service
request to the appropriate server within the LAN network.
Field
Meaning
Rule Index
Choose the rule number
Start Port Number
Enter a port number in this field
End Port Number
Enter a port number in this field
Local IP Address
Enter your server IP address in this field
8.4
IP Address Mapping
Field
Meaning
Rule Index
Choose the rule number
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Rule Type
One-to-one:
This is the mode maps one
local IP address to one global IP address.
Note that port numbers do not change for
the One-to-one NAT mapping type
Many-to-One:
This is the mode maps
multiple local IP addresses to one global
IP address. This is equivalent to Many to
One (i.e., PAT, port address translation)
Many-to-Many Overload:
This is mode
maps multiple local IP addresses to shared
global IP addresses
Many-to-Many No Overload:
This is
the mode maps each local IP
address to
unique global IP addresses
Server:
This type allows you to specify
inside servers of different services behind
the NAT to be accessible to the outside
world.
Local Start IP
This is the starting Inside Local IP Address (ILA).
Local IP addresses are N/A
for Server
port mapping
Local End IP
This is the end Inside Local IP Address (ILA). If your
rule is for all local IP addresses, then enter 0.0.0.0 as
the Local Start IP address and 255.255.255.255 as
the Local End IP
address. This field is N/A
for One-to-
one
and Server mapping types
Public Start IP
This is the starting Inside Public IP Address. Enter
0.0.0.0 here if you have a dynamic IP address from
your ISP
Public End IP
This is the ending Inside Public IP Address. This field
is N/A for One-to-one, Many-to-One
and Server
mapping types
If you have disabled the NAT option in the WAN-ISP section,
the Virtual Server function will hence be invalid.
If the DHCP server option is enabled, you have to be very
careful in assigning the IP addresses of the virtual servers in
order to avoid conflicts. The easiest way of configuring Virtual
Servers is to manually assign static IP address to each virtual
server PC, with an address that does not fall into the range of
IP addresses that are to be issued by the DHCP server. You
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can configure the virtual server IP address manually, but it
must still be in the same subnet as the router.
8.5
QoS
Quality of Service (QoS) helps to prioritize data as it enters your router. By attaching
special identification marks or headers to incoming packets, QoS determines which
queue the packets enter, based on priority. This is useful when there are certain
types of data you want to give higher priority to, such as voice data packets given
higher priority than Web data packets.
The main goal of QoS is prioritizing incoming data, preventing data loss due to
factors such as jitter, delay and dropping. Another important aspect of QoS is
ensuring that prioritizing one data flow doesn’t interfere with other data flows.
QoS can be toggled
Activated
and
Deactivated
. QoS must be activated before
you can edit the following options. When you are done making changes, click on
Add
to save your changes.
Click on
QoS Settings Summary
to view the list of QoS rules that have been
added.

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