Pro Nets Technology WA25TD2 ADSL 2 PLUS ROUTER WIRELESS User Manual WA25TC2

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Document ID	883044
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Document Description	Users Manual 2
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Date Submitted	2007-12-21 00:00:00
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Creation Date	2007-12-19 17:51:50
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Document Title	Microsoft Word - WA25TC2 User Manual.doc
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Document Author:	Winnie

6.3 Wireless
6.3.1 Access Point Settings
Beacon Interval: The Beacon Interval value indicates the frequency interval of the beacon.
Enter a value between 20 and 1000. A beacon is a packet broadcast by the Router to
synchronize the wireless network.
RTS/CTS Threshold: The RTS (Request To Send) threshold (number of bytes) for enabling
RTS/CTS handshake. Data with its frame size larger than this value will perform the RTS/CTS
handshake. Set this attribute to be larger than the maximum MSDU (MAC Service Data Unit)
size TURNS OFF the RTS/CTS handshake. Set this attribute to ZERO TURNS ON the RTS/CTS
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handshake. Enter a value between 0 and 2432.
Fragment Threshold: The threshold (number of bytes) for the fragmentation boundary for
directed messages. It is the maximum data fragment size that can be sent. Enter a value
between 256 and 2432.
DTIM: This value is between 1 and 255, indicates the interval of the Delivery Traffic Indication
Message (DTIM).
6.3.2 Multiple SSIDs Settings
SSID: The SSID is a unique name to identify the ADSL Router in the Wireless LAN. Wireless
Clients associating to the ADSL Router must have the same SSID. The define SSID name is
Default_WLAN.
Broadcast SSID: Select No to hide the SSID such that a station can not obtain the SSID through
passive scanning. Select Yes to make the SSID visible so a station can obtain in the SSID
through Passive scanning.
Channel ID: The range of radio frequencies used by IEEE 802.11b/g wireless devices us called
a channel.
[Authentication Type]
WEP (Wired Equivalent Privacy) encrypts data frames before transmitting over the wireless
network. Select Disable to allow all wireless computers to communicate with the access points
without any data encryption. Select 64-bit WEP or 128-bit WEP to use data encryption.
Key#1~Key#4 The WEP keys are used to encrypt data. Both the ADSL Router and the wireless
clients must use the same WEP key for data transmission. If you chose 64-bit WEP, then enter
any 10 hexadecimal digits (“0-9”, “A-F”) preceded by 0x for each key (1-4). If you choose 1280bit
WEP, then enter 26 hexadecimal digits (“0-9”, “A-F”) preceded by 0x for each key (1-4). The
values must be set up exactly the same on the Access Points as they are on the wireless client
stations. The same value must be assigned to Key 1 on both access point (your ADSL Router)
and the client adapters, the same value must be assigned to Key 2 on both access point and the
client stations and so on, for all four WEP keys.
WPA-PSK Wi-Fi Protected Access, pre-shared key. Encrypts data frames before transmitting
over the wireless network.
Pre-shared Key is used to encrypt data. Both the ADSL Router and the wireless clients must
use the same WPA-PSK Key for data transmission.
6.3.3 MAC Address Filter
You can allow or deny a lust of MAC addresses associated with the wireless stations access to
the ADSL Router.
Status: Use the drop down list box to enable or disable MAC address filtering.
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Action: Select Deny Association to block access to the router, MAC addresses not listed will be
allowed to access the router. Select Allow Association to permit access to the router, MAC
addresses not lusted will be denied access to the router.
7 Advanced Setup
7.1 Firewall
User can enable or disable firewall feature of the ADSL router in the page.
Firewall: Select this option can automatically detect and block Denial of Service (DoS) attacts,
such as Ping of Death, SYN Flood, Port Scan and Land Attack.
SPI: Select this option to Enabled or Disabled the SPI feature. (NOTE: If you enable SPI, all
traffics initiate from WAN would be blocked, including DMZ, Virtual Server, and ACL WAN side)
7.2 Routing
This table lists IP address of Internet destinations commonly accessed by your network.
When a computer requests to send data to a listed destination, the device uses the Gateway IP
to identify the first Internet router it should contact to route the data most efficiently. Select this
option will list the routing table information. You can press ADD ROUTE to edit the static route.
(As below screen)
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[Static Route]
Select this option to set Static Routing information.
Destination IP Address: This parameter specifies the IP network address of the final
destination of packets routed by this rule.
IP Subnet Mask: Enter the subnet mask for this destination.
Gateway IP Address: Enter the IP address of the gateway. A gateway does the actual
forwarding of the packets. Enter the gateway’s IP address in the field or select which PVC you
wish to act as a gateway.
The gateway is an immediate neighbor of your ADSL Router that will forward the packet to the
destination. On the LAN, the gateway must be a router on the same segment as your Router;
over Internet (WAN), the gateway must be the IP address of one of the remote nodes.
Metric: Metric represents the “cost” of transmission for routing purposes. IP Routing uses hop
count as the measurement of cost, with a minimum of 1 for directly connected networks. Enter a
number that approximates the cost for this link. The number need not to be precise, but it must
between 1 and 15. In practice, 2 or 3 is usually a good number.
Announced in RIP: This parameter determines if the ADSL router includes the router to this
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remote node in its RIP broadcasts. If you choose Yes, the router in this remote node will be
propagated to other hosts through RIP broadcasts. If you choose No, this route is kept private
and is not included in the RIP broadcasts.
When you are done making changes, click on SAVE to save your changes, DELETE to
delete the rule with the parameters you set, BACK to return to the previous screen or CANCEL
to exit without saving.
7.3 NAT
Network Address Translation (NAT) is a method for disguising the private IP addresses
you use on your LAN as the public IP address you use on the Internet. You define NAT rules that
specify exactly how and when to translate between public and private IP addresses. Simply
select this option to setup the NAT function for your ADSL router.
Virtual Circuit (VC): The Virtual Circuit (VC) properties of the ATM VC interface identify a unique
path that your ADSL/Ethernet router uses to communicate via the ATM-based network with the
telephone company central office equipment.
NAT Status: This filed shows the current status of the NAT function for the current VC.
Number of IPs: This field is to specify how many IPs are provided by your ISP for current VC. It
can be single IP or multiple IPs.
Note: For VCs with single IP, they share the same DMZ & Virtual servers; for VCs with multiple
IPs, each VC cab set DMZ and Virtual servers. Furthermore, for VCs with multiple IPs, they can
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define the Address Mapping rules; for VCs with single IP, since they have only one IP, there is no
need to individually define the Address Mapping rule.
7.3.1 What NAT Does
NAT changes the source IP address in a packet received from a subscriber (the inside
local address) to another (the inside global address) before forwarding the packet to the WAN
side. When the response comes back, NAT translates the destination address (the inside global
address) back to the inside local address before forwarding it to the original inside host. Note that
the IP address (either local or global) of an outside host is never changed.
The global IP addresses for the inside hosts can be either static or dynamically assigned by the
ISP. You may also designate servers, such as a Web server and a telnet server, on your local
network and make them accessible to the outside world. With no servers defined, your ROUTER
filters out all incoming inquiries, thus preventing intruders from probing your network. For more
information on IP address translation, refer to RFC 1631, The IP Network Address Translator
(NAT).
Inside/outside indicates where a host is located relative to the ROUTER. The computers
hosts of your LAN are inside, while the Web servers on the Internet are outside.
Global/local indicates the IP address of a host in a packet as the packet traverses a router. The
local address refers to the IP address of a host when the packet is in the local network, while the
global address refers to the IP address of the host when the same packet is traveling in the WAN
side.
Note that inside/outside refers to the location of a host, while global/local refers to the IP
address of a host used in a packet. Thus, an inside local address (ILA) is the IP address of an
inside host of a packet when the packet is still in the local network, while an inside global address
(IGA) is the IP address of the same inside host when the packet is on the WAN side.
The following table summarizes this information.
ITEM
DESCRIPTION
Inside
This refers to the host on the LAN.
Outside
This refers to the host on the WAN.
Local
This refers to the packet address (source or destination) as the packet
travels on the LAN.
Global
This refers to the packet address (source or destination) as the packet
travels on the WAN.
7.3.2 How NAT Works
Each packet has two addresses – a source address and a destination address. For
outgoing packets, the ILA is the source address on the LAN, and the IGA is the source address
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on the WAN. For incoming packets, the ILA is the destination address on the LAN, and the IGA is
the destination address on the WAN. NAT maps private (local) IP addresses to globally unique
ones required for communication with hosts on other networks. It replaces the original IP source
address (and TCP or UDP source port numbers for Many-to-One and Many-to-Many Overload
NAT mapping) in each packet and then forwards it to the Internet. The ROUTER keeps track of
the original addresses and port numbers so incoming reply packets can have their original
values restored.
The following figure illustrates this.
7.3.3 NAT Application
The following figure illustrates a possible NAT application, where three inside LANs
(logical LANs using IP Alias) behind the router can communicate with three distinct WAN
networks. More examples follow at the end of this chapter.
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7.3.4 NAT Mapping Types
NAT supports five types of IP/port mapping. They are:
a. One-to-One: In One-to-One mode, the TC3162 EVM maps one local IP address to one global
IP address.
b. Many-to-One: In Many-to-One mode, the TC3162 EVM maps multiple local IP addresses to
one global IP address.
c. Many-to-Many Overload: In Many-to-Many Overload mode, the TC3162 EVM maps multiple
local IP addresses to shared global IP addresses.
d. Many-to-Many No Overload: In Many-to-Many No Overload mode, the TC3162 EVM maps
each local IP address to a unique global IP address.
e. Server: This type allows you to specify inside servers of different services behind the NAT to
be accessible to the outside world.
The following table summarizes these types.
TYPE
IP MAPPING
One-to-One
ILA1
IGA1
Many-to-One (SUA/PAT)
ILA1
IGA1
ILA2
IGA1
…
Many-to-Many Overload
ILA1
IGA1
ILA2
IGA2
ILA3
IGA1
ILA4
IGA2
…
Many-to-Many No Overload ILA1
IGA1
ILA2
IGA2
ILA3
IGA3
…
Server
Server 1 IP
IGA1
Server 2 IP
IGA1
Server 3 IP
IGA1
7.3.5 DMZ
A DMZ (de-militarized zone) is a host between a private local network and the outside
public network. It prevents outside users from getting direct access to s server that has company
data. Users of the public network outside the company can access only the DMZ host.
DMZ: Toggle the DMZ function Enabled or Disabled.
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DMZ Host IP Address: Enter the specified IP Address for DMZ host on the LAN side
When you are done making changes, click on SAVE to save your changes or on BACK to return
to the previous screen.
7.3.6 Virtual Server
The Virtual Server is the server or server(s) behind NAT (on the LAN), for example, Web
server or FTP server, that you can make visible to the outside world even though NAT makes
your whole inside network appear as a single machine to the outside world.
Rule Index: The Virtual server rule index for this VC. You can specify up to 10 rules. All the VCs
with single IP will use the same Virtual Server rules.
Start & End port number: Enter the specific Start and End Port number you want to forward. If
it is one port only, you can enter the End port number the same as Start port number. For
example, set the FTP Virtual server, you can set the start and end port number to 21.
Local IP Address: Enter the IP Address for the Virtual Server in LAN side.
Virtual Server Listing: This is a listing of all virtual servers your have set.
When you are done making changes, click on SAVE to save your changes, DELETE to delete
the rule with the parameters you set, BACK to return to the previous screen or CANCEL to exit
without saving.
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7.3.7 IP Address Mapping
The IP Address Mapping is for those VCs that with multiple IPs. The IP Address Mapping
rule is per-VC based. (only for Multiple IPs’ VCs).
Rule Index: The Virtual server rule index for this VC. You can specify up to 10 rules. All the
VCs with single IP will use the same Virtual Server rules.
Rule Type: There are 4 types of One-to-One, Many-to-One, Many-to-Many Overload, and
Many-to Many No-Overload.
Local Start & End IP: Enter the local IP address you plan to map to. Local Start IP is the starting
local IP address & Local End IP is the ending local IP address. If the rule is for all local IPs, then
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the Start IP is 0.0.0.0 and the End IP is 255.255.255.255.
Public Start & End IP: Enter the Public IP Address you want to do NAT. Public Start IP is the
starting Public IP Address and Public End IP is the ending Public IP Address. If you have a
Dynamic IP, enter 0.0.0.0 as the Public Start IP.
When you are done making changes, click on SAVE to save your changes, DELETE to delete
the rule with the parameters you set, BACK to return to the previous screen or CANCEL to exit
without saving.
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7.4 QoS
QoS (Quality of Service). This option will provide better service of selected network traffic
over various technologies. Deploying QoS management to guarantee that all application receive
the service levels required and sufficient bandwidth to meet performance expectations is indeed
one important aspect of modem enterprise network.
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7.5 VLAN
Virtual LAN (VLAN) is a group of devices on one or more LANs that are configured so that they
can communicate as if they were attached to the same wire, when in fact they are located on a
number of different LAN segments. Because VLANs are based on logical instead of physical
connections, it is very flexible for user/host management, bandwidth allocation and resource
optimization.
(1) Port-Based VLAN: each physical switch port is configured with an access list specifying
membership in a set of VLANs.
(2) ATM VLAN-using LAN Emulation(LANE) protocol to map Ethernet packets into ATM cells
and deliver then to their destination by converting an Ethernet MAC address into an ATM
address.
The key for the IEEE 802.1Q to perform the above functions is in its tags. 802.1Q-compliant
switch ports can be configure to transmit tagged or untagged frames. A tag field containing VLAN
(and/or 802.1p priority) information can be inserted into an Ethernet frame. If a port has an
802.1Q-compliant device attached (such as another switch), these tagged frames can carry
VLAN membership information between switches, thus letting a VLAN span multiple switches.
However, it is important to ensure ports with non-802.1Q-compliant devices attached are
configured to transmit untagged frames. Many NICs for PCs and printers are not
802.1Q-compliant. If they received a tagged frame, they will not understand the VLAN tab and
will drop the frame. Also, the maximum legal Ethernet frame size for tagged frames was
increased in 802.1Q (and its companion, 802.3ac) from 1518 to 1522 bytes. This could cause
network interface cards and older switches to drop tagged frames as “oversized”
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Î Assign VLAN PVID for each interface: You can assign ATM VC, Ethernet (LAN) port, and
Wireless LAN port’s PVID in this section.
Î Define VLAN Group: Based on each VLAN group, you can configure each group’s VLAN
setting. You can configure up to 8 VLAN settings.
7.6 ADSL
Select this option to set ADSL Mode and ADSL Type information.
ADSL Mode: Select which mode your ADSL connection uses from the dropdown list.
The option has Auto Sync-up, ADSL2+, ADSL2, G.DMT, T1.413, G.LITE
ADSL Type: Select the ADSL type you use from the dropdown list.
ANNEX A, ANNEX I, ANNEX A/L, ANNEX M, ANNEX A/I/J/L/M
When you are done making changes, click on SAVE to save your changes.
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