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Page 111 / 177 Scroll up to view Page 106 - 110
Chapter 6.
Virtual Private Networking
|
111
N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual
Local LAN IP Address
The remote VPN
endpoint must have
these IP addresses
entered as its remote
addresses.
Subnet Mask
Enter the network mask.
Single PC - no
Subnet
Select this option if there is no LAN (only a single PC) at the
remote endpoint. If this option is selected, no additional data is
required.
Single/Start IP
Address
•
The IP address for a single address, or the starting address for
an address range used on the LAN. If you want to make a single
server on your LAN available to remote users, use a single
address settings.
•
Any
. The remote VPN endpoint can be at any IP address.
Finish IP
Address
For an address range, enter the finish IP address. This must be an
address range used on your LAN.
Subnet Mask
Enter the network mask.
Remote LAN IP Address
The remote VPN
endpoint must have
these IP addresses
entered as its local
addresses.
IP Address
Single PC - no Subnet
. Select this option if there is no LAN (only
a single PC) at the remote endpoint. If this option is selected, no
additional data is required. The typical application is a PC running
the VPN client at the remote end.
Single/Start IP
Address
• Enter an IP address on the remote LAN. You can use this setting
to access a server.
• For a range of addresses, enter the starting IP address. This
must be an address range used on the remote LAN.
•
Any
. Any outgoing traffic from specified Local IP computers
triggers an attempted VPN connection to the remote VPN
endpoint. Be sure you want this option before selecting it.
Finish IP
Address
Enter the finish IP address for a range of addresses. This must be
an address range used on the remote LAN.
Subnet Mask
Enter the network mask.
ESP Configuration
ESP (Encapsulating
Security Payload)
provides security for the
payload (data) sent
through the VPN tunnel.
SPI
Enter the required Security Policy Indexes (SPIs). Each policy
must have unique SPIs. These settings must match the remote
VPN endpoint. The in setting here must match the out setting on
the remote VPN endpoint, and the out setting here must match the
in setting on the remote VPN endpoint.
Encryption
Select an encryption algorithm, and enter the key in the field
provided. For 3DES, the keys should be 24 ASCII characters, and
for DES, the keys should be 8 ASCII characters.
•
DES
. The Data Encryption Standard (DES) processes input data
that is 64 bits wide, encrypting these values using a 56-bit key.
Faster but less secure than 3DES.
•
3DES
. (Triple DES) achieves a higher level of security by
encrypting the data three times using DES with three different,
unrelated keys.
Authentication
Table 7.
VPN Manual Policy Fields and Settings
(Continued)
Fields and Settings
Description
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Page 112 / 177
Chapter 7.
Advanced Settings (Part 1)
|
112
7
7.
Advanced Settings (Part 1)
Configuring for unique situations
This chapter describes advanced features of the N300 Wireless Dual Band ADSL2+ Modem
Router DGND3300v2. This chapter includes the following sections:
•
Using the LAN Setup Options
on page
112
•
Using a Dynamic DNS Service
on page
116
•
Configuring the WAN Setup Options
on page
117
•
Setting Up Quality of Service (QoS)
on page
119
•
Configuring Static Routes
on page
123
•
Wireless Repeating (Also Called WDS)
on page
125
Using the LAN Setup Options
The LAN Setup screen allows configuration of LAN IP services such as Dynamic Host
Configuration Protocol (DHCP) and Routing Information Protocol (RIP).
The N300 wireless modem router is shipped preconfigured to use private IP addresses on
the LAN side and to act as a DHCP server. The N300 wireless modem router’s default LAN
IP configuration is:
•
LAN IP address. 192.168.0.1
•
Subnet mask. 255.255.255.0
These addresses are part of the designated private address range for use in private
networks and should be suitable for most applications. If your network has a requirement to
use a different IP addressing scheme, you can make those changes in the LAN Setup
screen.
To configure LAN settings, log in to the N300 wireless modem router, and from the main
menu, select
Advanced > LAN Setup
. The following screen displays:
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Chapter 7.
Advanced Settings (Part 1)
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113
N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual
Figure 55.
If you make changes, you must click
Apply
for the changes to take effect.
Note:
If you change the LAN IP address of the N300 wireless modem
router while connected through the browser, you will be
disconnected. You must then open a new connection to the new IP
address and log in again.
The LAN Setup fields are explained in the following table.
Settings
Description
Device Name
A descriptive name for the N300 wireless modem router,
which will be shown in the Network on Windows Vista and the
Network Explorer on all Windows systems. The Device Name
field cannot be blank.
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114
|
Chapter 7.
Advanced Settings (Part 1)
N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual
Using the N300 Wireless Modem Router as a DHCP Server
By default, the N300 wireless modem router functions as a DHCP server, allowing it to assign
IP, DNS server, and default gateway addresses to all computers connected to the N300
wireless modem router’s LAN. The assigned default gateway address is the LAN address of
the N300 wireless modem router. The N300 wireless modem router assigns IP addresses to
LAN TCP/IP
Setup
IP Address
The LAN IP address of the N300 wireless modem router.
IP Subnet Mask
The LAN subnet mask of the N300 wireless modem router.
Combined with the IP address, the IP subnet mask allows a
device to know which other addresses are local to it, and
which must be reached through a gateway or N300 wireless
modem router.
RIP Direction
RIP (Router Information Protocol) allows the N300 wireless
modem router to exchange routing information with other
routers. This setting controls how the N300 wireless modem
router sends and receives RIP packets. Both is the default.
•
Both
or
Out Only
. The N300 wireless modem router
broadcasts its routing table periodically.
•
Both
or
In Only
. The N300 wireless modem router
incorporates the RIP information that it receives.
•
None
. The N300 wireless modem router will not send any
RIP packets and will ignore any RIP packets received.
RIP Version
This controls the format and the broadcasting method of the
RIP packets that the N300 wireless modem router sends. It
recognizes both formats when receiving. By default, this is
RIP-1.
• RIP-1 is universally supported. It is adequate for most
networks, unless you have an unusual network setup.
• RIP-2 carries more information. Both RIP-2B and RIP-2M
send the routing data in RIP-2 format. RIP-2B uses subnet
broadcasting. RIP-2M uses multicasting.
DHCP Server
Use Router as a DHCP
Server
This check box is usually selected so that the N300 wireless
modem router functions as a Dynamic Host Configuration
Protocol (DHCP) server. See
Using the N300 Wireless
Modem Router as a DHCP Server
on page
114.
Starting IP Address
Specify the start of the range for the pool of IP addresses in
the same subnet as the N300 wireless modem router.
Ending IP Address
Specify the end of the range for the pool of IP addresses in the
same subnet as the N300 wireless modem router.
Address Reservation
For more information, see
Address Reservation
on page
115.
When you specify a reserved IP address for a computer on
the LAN, that computer receives the same IP address each
time it accesses the N300 wireless modem router’s DHCP
server. Assign reserved IP addresses to servers that require
permanent IP settings.
Settings
Description
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Chapter 7.
Advanced Settings (Part 1)
|
115
N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual
the attached computers from a pool of addresses specified in this screen. Each pool address
is tested before it is assigned to avoid duplicate addresses on the LAN.
For most applications, the default DHCP and TCP/IP settings of the N300 wireless modem
router are satisfactory. Click the link to the online document
TCP/IP Networking Basics
on
page
172 for an explanation of DHCP and information about how to assign IP addresses for
your network.
Specify the pool of IP addresses to be assigned by setting the starting IP address and ending
IP address. These addresses should be part of the same IP address subnet as the N300
wireless modem router’s LAN IP address. Using the default addressing scheme, you should
define a range between 192.168.0.2 and 192.168.0.254, although you might wish to save
part of the range for devices with fixed addresses.
The N300 wireless modem router delivers the following parameters to any LAN device that
requests DHCP:
•
An IP Address from the range you have defined
•
Subnet Mask
•
Gateway IP Address (the N300 wireless modem router’s LAN IP address)
•
Primary DNS Server (if you entered a primary DNS address in the Basic Settings screen;
otherwise, the N300 wireless modem router’s LAN IP address)
•
Secondary DNS Server (if you entered a secondary DNS address in the Basic Settings
screen)
To use another device on your network as the DHCP server, or to manually configure the
network settings of all of your computers, clear the
Use Router as DHCP Server
check box.
Otherwise, leave it selected. If this service is not selected and no other DHCP server is
available on your network, you will need to set your computers’ IP addresses manually or
they will not be able to access the N300 wireless modem router.
Address Reservation
When you specify a reserved IP address for a computer on the LAN, that computer always
receives the same IP address each time it accesses the N300 wireless modem router’s
DHCP server. Reserved IP addresses should be assigned to computers or servers that
require permanent IP settings.
To reserve an IP address:
1.
Click
Add
.
2.
In the IP Address field, type the IP address to assign to the computer or server. (Choose an
IP address from the N300 wireless modem router’s LAN subnet, such as 192.168.0.x.)
3.
Type the MAC address of the computer or server.
Tip:
If the computer is already present on your network, you can copy its
MAC address from the Attached Devices screen and paste it here.
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