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Page 51 / 351 Scroll up to view Page 46 - 50
51
Configure
• Advanced
: Clicking on the Advanced link displays the Advanced LAN IP Interface page.
•
IGMP Forwarding
: The default setting is Disabled. If you check this option, it will
enable Internet Group Management Protocol (IGMP) multicast forwarding. IGMP allows
a router to determine which host groups have members on a given network segment.
•
RIP Send Mode
: Specifies whether the gateway should use Routing Information Proto-
col (RIP) broadcasts to advertise its routing tables to other routers on your network. You
may choose from the following protocols:
• RIP-1: Routing Information Protocol version 1
• RIP-2: RIP Version 2 is an extension of the original Routing Information Protocol (RIP-
1) that expands the amount of useful information in the RIP packets. While RIP-1 and
RIP-2 share the same basic algorithms, RIP-2 supports several new features, including
inclusion of subnet masks in RIP packets and implementation of multicasting instead of
broadcasting (which reduces the load on hosts which do not support routing protocols.
• RIP-1 compatibility: Compatible with RIP version 1
• RIP-2 with MD5: MD5 authentication is an extension of RIP-2 that increases security
by requiring an authentication key when routes are advertised.
• RIP MD5 Key: Secret password when using RIP-2 with MD5.
•
RIP Receive Mode:
Specifies whether the Gateway should use Routing Information
Protocol (RIP) broadcasts to update its routing tables with information received from
other routers on your network. The protocol choices are the same as for the RIP send
mode.
•
Proxy ARP:
Specifies whether you want the Gateway to respond when it receives an
address resolution protocol for devices behind it. This is a way to make a computer that
is physically located on one network appear to be part of a different physical network
connected to the same Gateway. It allows you to hide a computer with a public IP
address on a private network behind your Gateway, and still have the computer appear
to be on the public network “in front of” the Gateway.
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52
•
Static Client Address Translation:
If you check this checkbox, this feature allows a
statically addressed computer whose IP address falls outside of the LAN subnet(s) to
simply plug in and get online without any manual configuration on either the host or the
Netopia Gateway. If enabled, statically addressed LAN hosts that have an address out-
side of LAN subnets will be able to communicate via the Router’s WAN interface to the
Internet. Supported static IP address values
must
fall
outside
of the Router's LAN sub-
net(s).
• DHCP Server
: Your Gateway can provide network configuration information to computers
on your LAN, using the Dynamic Host Configuration Protocol (DHCP).
If you already have a DHCP server on your
LAN, you should turn this service off.
If you want the Gateway to provide this ser-
vice, click the
Ser
ver Mode
pull-down menu,
choose
Server
, then configure the range of IP
addresses that you would like the Gateway to
hand out to your computers.
You can also specify the length of time the computers can use the configuration informa-
tion; DHCP calls this period the lease time.
Your Service Provider may, for certain services, want to provide configuration from its
DHCP servers to the computers on your LANs. In this case, the Gateway will relay the
DHCP requests from your computers to a DHCP server in the Service Provider's network.
Click the relay-agent and enter the IP address of the Service Provider's DHCP server in the
Server Address field. This address is furnished by the Service Provider.
☛
NOTE:
The
Relay-agent
option only works when NAT is off and the Gateway is in
router mode.
Page 53 / 351
53
Configure
Wireless
(supported models)
If your Gateway is a wireless model (such as a 3347W) you can enable or disable the wire-
less LAN (WLAN) by clicking the
Wireless
link.
Wireless functionality is enabled by default.
If you uncheck the
Enable Wireless
checkbox, the Wireless Options are disabled, and the
Gateway will not provide or broadcast any wireless LAN services.
SSID (Network ID)
: The SSID is preset to a number that is unique to your unit. You can
either leave it as is, or change it by entering a freeform name of up to 32 characters, for
example “Ed’s Wireless LAN”. On client PCs’ software, this might also be called the
Net-
work Name
. The SSID is used to identify this particular wireless LAN. Depending on their
operating system or client wireless card, users must either:
•
select from a list of available wireless LANs that appear in a scanned list on their client
•
or, if you are in Closed System Mode (see
Enable Closed System Mode
below), enter
this name on their clients in order to join this wireless LAN.
The pull-down menu for enabling
Privacy
offers four settings:
WPA-802.1x, WPA-PSK
,
WEP - Automatic
, and
Off - No Privacy. WEP-Manual
is also available on the Advanced
Configuration Options page.
See “
Privacy
” on page
54.
Page 54 / 351
54
☛
NOTE:
On the 2200-Series Gateways,
WEP-Manual
privacy is enabled by default.
Use the Netopia Installation Wizard on the accompanying Netopia CD to gener-
ate WEP keys for connecting wireless client computers.
Privacy
•
Off - No Privacy
provides no encryption on your wireless LAN data.
•
WPA-802.1x
provides RADIUS server authentication support.
•
WPA-PSK
provides Wireless Protected Access, the most secure option for your wire-
less network. This mechanism provides the best data protection and access control.
Page 55 / 351
55
Configure
The
Pre Shared Key
is a passphrase shared between the Router and the clients and is
used to generate dynamically changing keys. The passphrase can be 8-63 characters or
up to 64 hex characters. It is recommended to use at least 20 characters for best secu-
rity.
•
WEP - Automatic
is a passphrase generator. You enter a passphrase that you choose
in the
Passphrase
field. The passphrase can be any string of words or numbers.
You can provide a level of data security by enabling WEP (Wired Equivalent Privacy) for
encryption of network data. You can enable 40-, 128-, or 256-bit WEP Encryption
(depending on the capability of your client wireless card) for IP traffic on your LAN.
You select a single key for encryption of outbound traffic. The WEP-enabled client must
have an identical key of the same length, in the identical slot (1 – 4) as the Gateway, in
order to successfully receive and decrypt the traffic. Similarly, the client also has a
‘default’ key that it uses to encrypt its transmissions. In order for the Gateway to
receive the client’s data, it must likewise have the identical key of the same length, in
the same slot. For simplicity, a Gateway and its clients need only enter, share, and use
the first key.

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