ZyXEL Communications P660HWD1V2 802.11g WIRELESS ADSL2+ 4-PORT GATEWAY User Manual P 660H HW W T Series V3 40 User s Guide

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P-660H/HW-D Series User’s Guide
5.1.5.3 IP Assignment with ENET ENCAP Encapsulation
In this case you can have either a static or dynamic IP. For a static IP you must fill in all the IP
Address and ENET ENCAP Gateway fields as supplied by your ISP. However for a
dynamic IP, the ZyXEL Device acts as a DHCP client on the WAN port and so the IP
Address and ENET ENCAP Gateway fields are not applicable (N/A) as the DHCP server
assigns them to the ZyXEL Device.
5.1.6 Nailed-Up Connection (PPP)
A nailed-up connection is a dial-up line where the connection is always up regardless of traffic
demand. The ZyXEL Device does two things when you specify a nailed-up connection. The
first is that idle timeout is disabled. The second is that the ZyXEL Device will try to bring up
the connection when turned on and whenever the connection is down. A nailed-up connection
can be very expensive for obvious reasons.
Do not specify a nailed-up connection unless your telephone company offers flat-rate service
or you need a constant connection and the cost is of no concern
5.1.7 NAT
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a
host in a packet, for example, the source address of an outgoing packet, used within one
network to a different IP address known within another network.
5.2 Metric
The metric represents the "cost of transmission". A router determines the best route for
transmission by choosing a path with the lowest "cost". RIP routing uses hop count as the
measurement of cost, with a minimum of "1" for directly connected networks. The number
must be between "1" and "15"; a number greater than "15" means the link is down. The
smaller the number, the lower the "cost".
The metric sets the priority for the ZyXEL Device’s routes to the Internet. If any two of the
default routes have the same metric, the ZyXEL Device uses the following pre-defined
priorities:
• Normal route: designated by the ISP (see Section 5.5 on page 82)
• Traffic-redirect route (see Section 5.7 on page 90)
• WAN-backup route, also called dial-backup (see Section 5.8 on page 91)
For example, if the normal route has a metric of "1" and the traffic-redirect route has a metric
of "2" and dial-backup route has a metric of "3", then the normal route acts as the primary
default route. If the normal route fails to connect to the Internet, the ZyXEL Device tries the
traffic-redirect route next. In the same manner, the ZyXEL Device uses the dial-backup route
if the traffic-redirect route also fails.
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If you want the dial-backup route to take first priority over the traffic-redirect route or even the
normal route, all you need to do is set the dial-backup route’s metric to "1" and the others to
"2" (or greater).
IP Policy Routing overrides the default routing behavior and takes priority over all of the
routes mentioned above.
5.3 Traffic Shaping
Traffic Shaping is an agreement between the carrier and the subscriber to regulate the average
rate and fluctuations of data transmission over an ATM network. This agreement helps
eliminate congestion, which is important for transmission of real time data such as audio and
video connections.
Peak Cell Rate (PCR) is the maximum rate at which the sender can send cells. This parameter
may be lower (but not higher) than the maximum line speed. 1 ATM cell is 53 bytes (424 bits),
so a maximum speed of 832Kbps gives a maximum PCR of 1962 cells/sec. This rate is not
guaranteed because it is dependent on the line speed.
Sustained Cell Rate (SCR) is the mean cell rate of each bursty traffic source. It specifies the
maximum average rate at which cells can be sent over the virtual connection. SCR may not be
greater than the PCR.
Maximum Burst Size (MBS) is the maximum number of cells that can be sent at the PCR.
After MBS is reached, cell rates fall below SCR until cell rate averages to the SCR again. At
this time, more cells (up to the MBS) can be sent at the PCR again.
If the PCR, SCR or MBS is set to the default of "0", the system will assign a maximum value
that correlates to your upstream line rate.
The following figure illustrates the relationship between PCR, SCR and MBS.
Figure 39 Example of Traffic Shaping
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5.3.1 ATM Traffic Classes
These are the basic ATM traffic classes defined by the ATM Forum Traffic Management 4.0
Specification.
5.3.1.1 Constant Bit Rate (CBR)
Constant Bit Rate (CBR) provides fixed bandwidth that is always available even if no data is
being sent. CBR traffic is generally time-sensitive (doesn't tolerate delay). CBR is used for
connections that continuously require a specific amount of bandwidth. A PCR is specified and
if traffic exceeds this rate, cells may be dropped. Examples of connections that need CBR
would be high-resolution video and voice.
5.3.1.2 Variable Bit Rate (VBR)
The Variable Bit Rate (VBR) ATM traffic class is used with bursty connections. Connections
that use the Variable Bit Rate (VBR) traffic class can be grouped into real time (VBR-RT) or
non-real time (VBR-nRT) connections.
The VBR-RT (real-time Variable Bit Rate) type is used with bursty connections that require
closely controlled delay and delay variation. It also provides a fixed amount of bandwidth (a
PCR is specified) but is only available when data is being sent. An example of an VBR-RT
connection would be video conferencing. Video conferencing requires real-time data transfers
and the bandwidth requirement varies in proportion to the video image's changing dynamics.
The VBR-nRT (non real-time Variable Bit Rate) type is used with bursty connections that do
not require closely controlled delay and delay variation. It is commonly used for "bursty"
traffic typical on LANs. PCR and MBS define the burst levels, SCR defines the minimum
level. An example of an VBR-nRT connection would be non-time sensitive data file transfers.
5.3.1.3 Unspecified Bit Rate (UBR)
The Unspecified Bit Rate (UBR) ATM traffic class is for bursty data transfers. However, UBR
doesn't guarantee any bandwidth and only delivers traffic when the network has spare
bandwidth. An example application is background file transfer.
5.4 Zero Configuration Internet Access
Once you turn on and connect the ZyXEL Device to a telephone jack, it automatically detects
the Internet connection settings (such as the VCI/VPI numbers and the encapsulation method)
from the ISP and makes the necessary configuration changes. In cases where additional
account information (such as an Internet account user name and password) is required or the
ZyXEL Device cannot connect to the ISP, you will be redirected to web screen(s) for
information input or troubleshooting.
Zero configuration for Internet access is disable when
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• the ZyXEL Device is in bridge mode
• you set the ZyXEL Device to use a static (fixed) WAN IP address.
5.5 Internet Connection
To change your ZyXEL Device’s WAN Internet access settings, click Network > WAN. The
screen differs by the encapsulation.
See Section 5.1 on page 76 for more information.
Figure 40 Internet Connection (PPPoE)
The following table describes the labels in this screen.
Table 20 Internet Connection
LABEL
DESCRIPTION
General
Name
Enter the name of your Internet Service Provider, e.g., MyISP. This information is
for identification purposes only.
Mode
Select Routing (default) from the drop-down list box if your ISP allows multiple
computers to share an Internet account. Otherwise select Bridge.
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Table 20 Internet Connection (continued)
LABEL
DESCRIPTION
Encapsulation
Select the method of encapsulation used by your ISP from the drop-down list
box. Choices vary depending on the mode you select in the Mode field.
If you select Bridge in the Mode field, select either PPPoA or RFC 1483.
If you select Routing in the Mode field, select PPPoA, RFC 1483, ENET
ENCAP or PPPoE.
User Name
(PPPoA and PPPoE encapsulation only) Enter the user name exactly as your
ISP assigned. If assigned a name in the form user@domain where domain
identifies a service name, then enter both components exactly as given.
Password
(PPPoA and PPPoE encapsulation only) Enter the password associated with the
user name above.
Service Name
(PPPoE only) Type the name of your PPPoE service here.
Multiplexing
Select the method of multiplexing used by your ISP from the drop-down list.
Choices are VC or LLC.
Virtual Circuit ID
VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a virtual
circuit. Refer to the appendix for more information.
VPI
The valid range for the VPI is 0 to 255. Enter the VPI assigned to you.
VCI
The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local
management of ATM traffic). Enter the VCI assigned to you.
IP Address
This option is available if you select Routing in the Mode field.
A static IP address is a fixed IP that your ISP gives you. A dynamic IP address is
not fixed; the ISP assigns you a different one each time you connect to the
Internet.
If you use the encapsulation type except RFC 1483, select Obtain an IP
Address Automatically when you have a dynamic IP address; otherwise select
Static IP Address and type your ISP assigned IP address in the IP Address
field below.
If you use RFC 1483, enter the IP address given by your ISP in the IP Address
field.
Subnet Mask
(ENET ENCAP
encapsulation only)
Enter a subnet mask in dotted decimal notation.
Refer to the appendices to calculate a subnet mask If you are implementing
subnetting.
Gateway IP address You must specify a gateway IP address (supplied by your ISP) when you select
ENET ENCAP in the Encapsulation field
(ENET ENCAP
encapsulation only)
Connection
(PPPoA and PPPoE
encapsulation only)
Nailed-Up
Connection
Select Nailed-Up Connection when you want your connection up all the time.
The ZyXEL Device will try to bring up the connection automatically if it is
disconnected.
Connect on Demand Select Connect on Demand when you don't want the connection up all the time
and specify an idle time-out in the Max Idle Timeout field.
83
Max Idle Timeout
Specify an idle time-out in the Max Idle Timeout field when you select Connect
on Demand. The default setting is 0, which means the Internet session will not
timeout.
Apply
Click Apply to save the changes.
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Table 20 Internet Connection (continued)
LABEL
DESCRIPTION
Cancel
Click Cancel to begin configuring this screen afresh.
Advanced Setup
Click this button to display the Advanced Internet Connection Setup screen
and edit more details of your WAN setup.
5.5.1 Configuring Advanced Internet Connection Setup
To edit your ZyXEL Device's advanced WAN settings, click the Advanced Setup button in
the Internet Connection screen. The screen appears as shown.
Figure 41 Advanced Internet Connection Setup
The following table describes the labels in this screen.
Table 21 Advanced Internet Connection Setup
LABEL
DESCRIPTION
RIP & Multicast
Setup
RIP Direction
Select the RIP direction from None, Both, In Only and Out Only.
RIP Version
Select the RIP version from RIP-1, RIP-2B and RIP-2M.
Multicast
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to
establish membership in a multicast group. The ZyXEL Device supports both IGMP
version 1 (IGMP-v1) and IGMP-v2. Select None to disable it.
ATM QoS
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Table 21 Advanced Internet Connection Setup (continued)
LABEL
DESCRIPTION
ATM QoS Type
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for voice
or data traffic. Select UBR (Unspecified Bit Rate) for applications that are non-time
sensitive, such as e-mail. Select VBR-nRT (Variable Bit Rate-non Real Time) or
VBR-RT (Variable Bit Rate-Real Time) for bursty traffic and bandwidth sharing with
other applications.
Peak Cell Rate
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak Cell
Rate (PCR). This is the maximum rate at which the sender can send cells. Type the
PCR here.
Sustain Cell Rate The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. Type the SCR, which must be less than the PCR. Note that system
default is 0 cells/sec.
Maximum Burst
Size
Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent
at the peak rate. Type the MBS, which is less than 65535.
Zero
Configuration
This feature is not applicable/available when you configure the ZyXEL Device to
use a static WAN IP address or in bridge mode.
Select Yes to set the ZyXEL Device to automatically detect the Internet connection
settings (such as the VCI/VPI numbers and the encapsulation method) from the ISP
and make the necessary configuration changes.
Select No to disable this feature. You must manually configure the ZyXEL Device
for Internet access.
PPPoE
Passthrough
(PPPoE
encapsulation
only)
This field is available when you select PPPoE encapsulation.
In addition to the ZyXEL Device's built-in PPPoE client, you can enable PPPoE
pass through to allow up to ten hosts on the LAN to use PPPoE client software on
their computers to connect to the ISP via the ZyXEL Device. Each host can have a
separate account and a public WAN IP address.
PPPoE pass through is an alternative to NAT for application where NAT is not
appropriate.
Disable PPPoE pass through if you do not need to allow hosts on the LAN to use
PPPoE client software on their computers to connect to the ISP.
Back
Click Back to return to the previous screen.
Apply
Click Apply to save the changes.
Cancel
Click Cancel to begin configuring this screen afresh.
5.6 Configuring More Connections
This section describes the protocol-independent parameters for a remote network. They are
required for placing calls to a remote gateway and the network behind it across a WAN
connection. When you use the WAN > Internet Connection screen to set up Internet access,
you are configuring the first WAN connection.
Click Network > WAN > More Connections to display the screen as shown next.
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Figure 42 More Connections
The following table describes the labels in this screen.
Table 22 More Connections
LABEL
DESCRIPTION
This is the index number of a connection.
Active
This display whether this connection is activated. Clear the check box to disable
the connection. Select the check box to enable it.
Name
This is the descriptive name for this connection.
VPI/VCI
This is the VPI and VCI values used for this connection.
Encapsulation
This is the method of encapsulation used for this connection.
Modify
The first (ISP) connection is read-only in this screen. Use the WAN > Internet
Connection screen to edit it.
Click the edit icon to go to the screen where you can edit the connection.
Click the delete icon to remove an existing connection. You cannot remove the
first connection.
Apply
Click Apply to save the changes.
Cancel
Click Cancel to begin configuring this screen afresh.
5.6.1 More Connections Edit
Click the edit icon in the More Connections screen to configure a connection.
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Figure 43 More Connections Edit
The following table describes the labels in this screen.
Table 23 More Connections Edit
87
LABEL
DESCRIPTION
Active
Select the check box to activate or clear the check box to deactivate this
connection.
Name
Enter a unique, descriptive name of up to 13 ASCII characters for this
connection.
Mode
Select Routing from the drop-down list box if your ISP allows multiple computers
to share an Internet account.
If you select Bridge, the ZyXEL Device will forward any packet that it does not
route to this remote node; otherwise, the packets are discarded.
Encapsulation
Select the method of encapsulation used by your ISP from the drop-down list
box. Choices are PPPoA, RFC 1483, ENET ENCAP or PPPoE.
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Table 23 More Connections Edit (continued)
LABEL
DESCRIPTION
User Name
(PPPoA and PPPoE encapsulation only) Enter the user name exactly as your
ISP assigned. If assigned a name in the form user@domain where domain
identifies a service name, then enter both components exactly as given.
Password
(PPPoA and PPPoE encapsulation only) Enter the password associated with the
user name above.
Service Name
(PPPoE only) Type the name of your PPPoE service here.
Multiplexing
Select the method of multiplexing used by your ISP from the drop-down list.
Choices are VC or LLC.
By prior agreement, a protocol is assigned a specific virtual circuit, for example,
VC1 will carry IP. If you select VC, specify separate VPI and VCI numbers for
each protocol.
For LLC-based multiplexing or PPP encapsulation, one VC carries multiple
protocols with protocol identifying information being contained in each packet
header. In this case, only one set of VPI and VCI numbers need be specified for
all protocols.
VPI
The valid range for the VPI is 0 to 255. Enter the VPI assigned to you.
VCI
The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local
management of ATM traffic). Enter the VCI assigned to you.
IP Address
This option is available if you select Routing in the Mode field.
A static IP address is a fixed IP that your ISP gives you. A dynamic IP address is
not fixed; the ISP assigns you a different one each time you connect to the
Internet.
If you use the encapsulation type except RFC 1483, select Obtain an IP
Address Automatically when you have a dynamic IP address; otherwise select
Static IP Address and type your ISP assigned IP address in the IP Address
field below.
If you use RFC 1483, enter the IP address given by your ISP in the IP Address
field.
Subnet Mask
Enter a subnet mask in dotted decimal notation.
Refer to the appendices to calculate a subnet mask If you are implementing
subnetting.
Gateway IP address Specify a gateway IP address (supplied by your ISP).
Connection
Nailed-Up
Connection
Select Nailed-Up Connection when you want your connection up all the time.
The ZyXEL Device will try to bring up the connection automatically if it is
disconnected.
Connect on Demand Select Connect on Demand when you don't want the connection up all the time
and specify an idle time-out in the Max Idle Timeout field.
Max Idle Timeout
Specify an idle time-out in the Max Idle Timeout field when you select Connect
on Demand. The default setting is 0, which means the Internet session will not
timeout.
NAT
SUA only is available only when you select Routing in the Mode field.
Select SUA Only if you have one public IP address and want to use NAT. Click
Edit to go to the Port Forwarding screen to edit a server mapping set.
Otherwise, select None to disable NAT.
Back
Click Back to return to the previous screen.
Apply
Click Apply to save the changes.
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Table 23 More Connections Edit (continued)
LABEL
DESCRIPTION
Cancel
Click Cancel to begin configuring this screen afresh.
Advanced Setup
Click this button to display the More Connections Advanced screen and edit
more details of your WAN setup.
5.6.2 Configuring More Connections Advanced Setup
To edit your ZyXEL Device's advanced WAN settings, click the Advanced Setup button in
the More Connections Edit screen. The screen appears as shown.
Figure 44 More Connections Advanced Setup
The following table describes the labels in this screen.
Table 24 More Connections Advanced Setup
LABEL
DESCRIPTION
RIP & Multicast
Setup
RIP Direction
Select the RIP direction from None, Both, In Only and Out Only.
RIP Version
Select the RIP version from RIP-1, RIP-2B and RIP-2M.
Multicast
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to
establish membership in a multicast group. The ZyXEL Device supports both IGMP
version 1 (IGMP-v1) and IGMP-v2. Select None to disable it.
ATM QoS
ATM QoS Type
89
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for voice
or data traffic. Select UBR (Unspecified Bit Rate) for applications that are non-time
sensitive, such as e-mail. Select VBR-nRT (Variable Bit Rate-non Real Time) or
VBR-RT (Variable Bit Rate-Real Time) for bursty traffic and bandwidth sharing with
other applications.
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Table 24 More Connections Advanced Setup (continued)
LABEL
DESCRIPTION
Peak Cell Rate
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak Cell
Rate (PCR). This is the maximum rate at which the sender can send cells. Type the
PCR here.
Sustain Cell Rate The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. Type the SCR, which must be less than the PCR. Note that system
default is 0 cells/sec.
Maximum Burst
Size
Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent
at the peak rate. Type the MBS, which is less than 65535.
Back
Click Back to return to the previous screen.
Apply
Click Apply to save the changes.
Cancel
Click Cancel to begin configuring this screen afresh.
5.7 Traffic Redirect
Traffic redirect forwards traffic to a backup gateway when the ZyXEL Device cannot connect
to the Internet. An example is shown in the figure below.
Figure 45 Traffic Redirect Example
The following network topology allows you to avoid triangle route security issues when the
backup gateway is connected to the LAN. Use IP alias to configure the LAN into two or three
logical networks with the ZyXEL Device itself as the gateway for each LAN network. Put the
protected LAN in one subnet (Subnet 1 in the following figure) and the backup gateway in
another subnet (Subnet 2). Configure filters that allow packets from the protected LAN
(Subnet 1) to the backup gateway (Subnet 2).
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Figure 46 Traffic Redirect LAN Setup
5.8 Configuring WAN Backup
To change your ZyXEL Device’s WAN backup settings, click Network > WAN > WAN
Backup Setup. The screen appears as shown.
Figure 47 WAN Backup Setup
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The following table describes the labels in this screen.
Table 25 WAN Backup Setup
LABEL
DESCRIPTION
Backup Type
Select the method that the ZyXEL Device uses to check the DSL connection.
Select DSL Link to have the ZyXEL Device check if the connection to the DSLAM is
up. Select ICMP to have the ZyXEL Device periodically ping the IP addresses
configured in the Check WAN IP Address fields.
Check WAN IP
Address1-3
Configure this field to test your ZyXEL Device's WAN accessibility. Type the IP
address of a reliable nearby computer (for example, your ISP's DNS server
address).
Note: If you activate either traffic redirect or dial backup, you must
configure at least one IP address here.
When using a WAN backup connection, the ZyXEL Device periodically pings the
addresses configured here and uses the other WAN backup connection (if
configured) if there is no response.
Fail Tolerance
Type the number of times (2 recommended) that your ZyXEL Device may ping the
IP addresses configured in the Check WAN IP Address field without getting a
response before switching to a WAN backup connection (or a different WAN
backup connection).
Recovery Interval When the ZyXEL Device is using a lower priority connection (usually a WAN backup
connection), it periodically checks to whether or not it can use a higher priority
connection.
Type the number of seconds (30 recommended) for the ZyXEL Device to wait
between checks. Allow more time if your destination IP address handles lots of
traffic.
Timeout
Type the number of seconds (3 recommended) for your ZyXEL Device to wait for a
ping response from one of the IP addresses in the Check WAN IP Address field
before timing out the request. The WAN connection is considered "down" after the
ZyXEL Device times out the number of times specified in the Fail Tolerance field.
Use a higher value in this field if your network is busy or congested.
Traffic Redirect
Traffic redirect forwards traffic to a backup gateway when the ZyXEL Device cannot
connect to the Internet.
Active Traffic
Redirect
Select this check box to have the ZyXEL Device use traffic redirect if the normal
WAN connection goes down.
Note: If you activate traffic redirect, you must configure at least one
Check WAN IP Address.
Metric
This field sets this route's priority among the routes the ZyXEL Device uses.
The metric represents the "cost of transmission". A router determines the best route
for transmission by choosing a path with the lowest "cost". RIP routing uses hop
count as the measurement of cost, with a minimum of "1" for directly connected
networks. The number must be between "1" and "15"; a number greater than "15"
means the link is down. The smaller the number, the lower the "cost".
Backup Gateway
Type the IP address of your backup gateway in dotted decimal notation. The ZyXEL
Device automatically forwards traffic to this IP address if the ZyXEL Device's
Internet connection terminates.
Apply
Click Apply to save the changes.
Cancel
Click Cancel to begin configuring this screen afresh.
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CHAPTER 6
LAN Setup
This chapter describes how to configure LAN settings.
6.1 LAN Overview
A Local Area Network (LAN) is a shared communication system to which many computers
are attached. A LAN is a computer network limited to the immediate area, usually the same
building or floor of a building. The LAN screens can help you configure a LAN DHCP server
and manage IP addresses.
See Section 6.3 on page 100 to configure the LAN screens.
6.1.1 LANs, WANs and the ZyXEL Device
The actual physical connection determines whether the ZyXEL Device ports are LAN or
WAN ports. There are two separate IP networks, one inside the LAN network and the other
outside the WAN network as shown next.
Figure 48 LAN and WAN IP Addresses
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6.1.2 DHCP Setup
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual
clients to obtain TCP/IP configuration at start-up from a server. You can configure the ZyXEL
Device as a DHCP server or disable it. When configured as a server, the ZyXEL Device
provides the TCP/IP configuration for the clients. If you turn DHCP service off, you must
have another DHCP server on your LAN, or else the computer must be manually configured.
6.1.2.1 IP Pool Setup
The ZyXEL Device is pre-configured with a pool of IP addresses for the DHCP clients (DHCP
Pool). See the product specifications in the appendices. Do not assign static IP addresses from
the DHCP pool to your LAN computers.
6.1.3 DNS Server Address
DNS (Domain Name System) is for mapping a domain name to its corresponding IP address
and vice versa. The DNS server is extremely important because without it, you must know the
IP address of a machine before you can access it. The DNS server addresses that you enter in
the DHCP setup are passed to the client machines along with the assigned IP address and
subnet mask.
There are two ways that an ISP disseminates the DNS server addresses. The first is for an ISP
to tell a customer the DNS server addresses, usually in the form of an information sheet, when
s/he signs up. If your ISP gives you the DNS server addresses, enter them in the DNS Server
fields in DHCP Setup, otherwise, leave them blank.
Some ISP’s choose to pass the DNS servers using the DNS server extensions of PPP IPCP (IP
Control Protocol) after the connection is up. If your ISP did not give you explicit DNS servers,
chances are the DNS servers are conveyed through IPCP negotiation. The ZyXEL Device
supports the IPCP DNS server extensions through the DNS proxy feature.
If the Primary and Secondary DNS Server fields in the DHCP Setup screen are not
specified, for instance, left as 0.0.0.0, the ZyXEL Device tells the DHCP clients that it itself is
the DNS server. When a computer sends a DNS query to the ZyXEL Device, the ZyXEL
Device forwards the query to the real DNS server learned through IPCP and relays the
response back to the computer.
Please note that DNS proxy works only when the ISP uses the IPCP DNS server extensions. It
does not mean you can leave the DNS servers out of the DHCP setup under all circumstances.
If your ISP gives you explicit DNS servers, make sure that you enter their IP addresses in the
DHCP Setup screen. This way, the ZyXEL Device can pass the DNS servers to the computers
and the computers can query the DNS server directly without the ZyXEL Device’s
intervention.
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6.1.4 DNS Server Address Assignment
Use DNS (Domain Name System) to map a domain name to its corresponding IP address and
vice versa. The DNS server is extremely important because without it, you must know the IP
address of a computer before you can access it.
There are two ways that an ISP disseminates the DNS server addresses.
• The ISP tells you the DNS server addresses, usually in the form of an information sheet,
when you sign up. If your ISP gives you DNS server addresses, enter them in the DNS
Server fields in the DHCP Setup screen.
• The ZyXEL Device acts as a DNS proxy when the Primary and Secondary DNS Server
fields are left as 0.0.0.0 in the DHCP Setup screen.
6.2 LAN TCP/IP
The ZyXEL Device has built-in DHCP server capability that assigns IP addresses and DNS
servers to systems that support DHCP client capability.
6.2.1 IP Address and Subnet Mask
Similar to the way houses on a street share a common street name, so too do computers on a
LAN share one common network number.
Where you obtain your network number depends on your particular situation. If the ISP or
your network administrator assigns you a block of registered IP addresses, follow their
instructions in selecting the IP addresses and the subnet mask.
If the ISP did not explicitly give you an IP network number, then most likely you have a single
user account and the ISP will assign you a dynamic IP address when the connection is
established. If this is the case, it is recommended that you select a network number from
192.168.0.0 to 192.168.255.0 and you must enable the Network Address Translation (NAT)
feature of the ZyXEL Device. The Internet Assigned Number Authority (IANA) reserved this
block of addresses specifically for private use; please do not use any other number unless you
are told otherwise. Let's say you select 192.168.1.0 as the network number; which covers 254
individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other
words, the first three numbers specify the network number while the last number identifies an
individual computer on that network.
Once you have decided on the network number, pick an IP address that is easy to remember,
for instance, 192.168.1.1, for your ZyXEL Device, but make sure that no other device on your
network is using that IP address.
The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device
will compute the subnet mask automatically based on the IP address that you entered. You
don't need to change the subnet mask computed by the ZyXEL Device unless you are
instructed to do otherwise.
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6.2.1.1 Private IP Addresses
Every machine on the Internet must have a unique address. If your networks are isolated from
the Internet, for example, only between your two branch offices, you can assign any IP
addresses to the hosts without problems. However, the Internet Assigned Numbers Authority
(IANA) has reserved the following three blocks of IP addresses specifically for private
networks:
• 10.0.0.0 — 10.255.255.255
• 172.16.0.0 — 172.31.255.255
• 192.168.0.0 — 192.168.255.255
You can obtain your IP address from the IANA, from an ISP or it can be assigned from a
private network. If you belong to a small organization and your Internet access is through an
ISP, the ISP can provide you with the Internet addresses for your local networks. On the other
hand, if you are part of a much larger organization, you should consult your network
administrator for the appropriate IP addresses.
Note: Regardless of your particular situation, do not create an arbitrary IP address;
always follow the guidelines above. For more information on address
assignment, please refer to RFC 1597, Address Allocation for Private Internets
and RFC 1466, Guidelines for Management of IP Address Space.
6.2.2 RIP Setup
RIP (Routing Information Protocol) allows a router to exchange routing information with
other routers. The RIP Direction field controls the sending and receiving of RIP packets.
When set to:
• Both - the ZyXEL Device will broadcast its routing table periodically and incorporate
the RIP information that it receives.
• In Only - the ZyXEL Device will not send any RIP packets but will accept all RIP
packets received.
• Out Only - the ZyXEL Device will send out RIP packets but will not accept any RIP
packets received.
• None - the ZyXEL Device will not send any RIP packets and will ignore any RIP
packets received.
The Version field controls the format and the broadcasting method of the RIP packets that the
ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally
supported; but RIP-2 carries more information. RIP-1 is probably adequate for most networks,
unless you have an unusual network topology.
Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that
RIP-2B uses subnet broadcasting while RIP-2M uses multicasting.
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6.2.3 Multicast
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1
recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to
a group of hosts on the network - not everybody and not just 1.
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish
membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC
2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If
you would like to read more detailed information about interoperability between IGMP
version 2 and version 1, please see sections 4 and 5 of RFC 2236. The class D IP address is
used to identify host groups and can be in the range 224.0.0.0 to 239.255.255.255. The address
224.0.0.0 is not assigned to any group and is used by IP multicast computers. The address
224.0.0.1 is used for query messages and is assigned to the permanent group of all IP hosts
(including gateways). All hosts must join the 224.0.0.1 group in order to participate in IGMP.
The address 224.0.0.2 is assigned to the multicast routers group.
The ZyXEL Device supports both IGMP version 1 (IGMP-v1) and IGMP version 2 (IGMPv2). At start up, the ZyXEL Device queries all directly connected networks to gather group
membership. After that, the ZyXEL Device periodically updates this information. IP
multicasting can be enabled/disabled on the ZyXEL Device LAN and/or WAN interfaces in
the web configurator (LAN; WAN). Select None to disable IP multicasting on these
interfaces.
6.2.4 Any IP
Traditionally, you must set the IP addresses and the subnet masks of a computer and the
ZyXEL Device to be in the same subnet to allow the computer to access the Internet (through
the ZyXEL Device). In cases where your computer is required to use a static IP address in
another network, you may need to manually configure the network settings of the computer
every time you want to access the Internet via the ZyXEL Device.
With the Any IP feature and NAT enabled, the ZyXEL Device allows a computer to access the
Internet without changing the network settings (such as IP address and subnet mask) of the
computer, when the IP addresses of the computer and the ZyXEL Device are not in the same
subnet. Whether a computer is set to use a dynamic or static (fixed) IP address, you can simply
connect the computer to the ZyXEL Device and access the Internet.
The following figure depicts a scenario where a computer is set to use a static private IP
address in the corporate environment. In a residential house where a ZyXEL Device is
installed, you can still use the computer to access the Internet without changing the network
settings, even when the IP addresses of the computer and the ZyXEL Device are not in the
same subnet.
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Figure 49 Any IP Example
The Any IP feature does not apply to a computer using either a dynamic IP address or a static
IP address that is in the same subnet as the ZyXEL Device’s IP address.
Note: You must enable NAT/SUA to use the Any IP feature on the ZyXEL Device.
6.2.4.1 How Any IP Works
Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP
address) to a physical machine address, also known as a Media Access Control or MAC
address, on the local area network. IP routing table is defined on IP Ethernet devices (the
ZyXEL Device) to decide which hop to use, to help forward data along to its specified
destination.
The following lists out the steps taken, when a computer tries to access the Internet for the first
time through the ZyXEL Device.
1 When a computer (which is in a different subnet) first attempts to access the Internet, it
sends packets to its default gateway (which is not the ZyXEL Device) by looking at the
MAC address in its ARP table.
2 When the computer cannot locate the default gateway, an ARP request is broadcast on the
LAN.
3 The ZyXEL Device receives the ARP request and replies to the computer with its own
MAC address.
4 The computer updates the MAC address for the default gateway to the ARP table. Once
the ARP table is updated, the computer is able to access the Internet through the ZyXEL
Device.
5 When the ZyXEL Device receives packets from the computer, it creates an entry in the IP
routing table so it can properly forward packets intended for the computer.
After all the routing information is updated, the computer can access the ZyXEL Device and
the Internet as if it is in the same subnet as the ZyXEL Device.
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6.3 Configuring LAN IP
Click LAN to open the IP screen. See Section 6.1 on page 94 for background information.
Figure 50 LAN IP
The following table describes the fields in this screen.
Table 26 LAN IP
LABEL
DESCRIPTION
TCP/IP
IP Address
Enter the IP address of your ZyXEL Device in dotted decimal notation, for
example, 192.168.1.1 (factory default).
IP Subnet Mask
Type the subnet mask assigned to you by your ISP (if given).
Apply
Click Apply to save your changes back to the ZyXEL Device.
Cancel
Click Cancel to begin configuring this screen afresh.
Advanced Setup
Click this button to display the Advanced LAN Setup screen and edit more
details of your LAN setup.
6.3.1 Configuring Advanced LAN Setup
To edit your ZyXEL Device's advanced LAN settings, click the Advanced Setup button in the
LAN IP screen. The screen appears as shown.
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Figure 51 Advanced LAN Setup
The following table describes the labels in this screen.
Table 27 Advanced LAN Setup
LABEL
DESCRIPTION
RIP & Multicast
Setup
101
RIP Direction
Select the RIP direction from None, Both, In Only and Out Only.
RIP Version
Select the RIP version from RIP-1, RIP-2B and RIP-2M.
Multicast
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to
establish membership in a multicast group. The ZyXEL Device supports both IGMP
version 1 (IGMP-v1) and IGMP-v2. Select None to disable it.
Any IP Setup
Select the Active check box to enable the Any IP feature. This allows a computer to
access the Internet without changing the network settings (such as IP address and
subnet mask) of the computer, even when the IP addresses of the computer and
the ZyXEL Device are not in the same subnet.
When you disable the Any IP feature, only computers with dynamic IP addresses or
static IP addresses in the same subnet as the ZyXEL Device’s LAN IP address can
connect to the ZyXEL Device or access the Internet through the ZyXEL Device.
Windows
Networking
(NetBIOS over
TCP/IP)
NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that
enable a computer to connect to and communicate with a LAN. For some dial-up
services such as PPPoE or PPTP, NetBIOS packets cause unwanted calls.
However it may sometimes be necessary to allow NetBIOS packets to pass through
to the WAN in order to find a computer on the WAN.
Allow between
LAN and WAN
Select this check box to forward NetBIOS packets from the LAN to the WAN and
from the WAN to the LAN. If your firewall is enabled with the default policy set to
block WAN to LAN traffic, you also need to enable the default WAN to LAN firewall
rule that forwards NetBIOS traffic.
Clear this check box to block all NetBIOS packets going from the LAN to the WAN
and from the WAN to the LAN.
Back
Click Back to return to the previous screen.
Apply
Click Apply to save the changes.
Cancel
Click Cancel to begin configuring this screen afresh.
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6.4 DHCP Setup
Use this screen to configure the DNS server information that the ZyXEL Device sends to the
DHCP client devices on the LAN.
Figure 52 DHCP Setup
The following table describes the labels in this screen.
Table 28 DHCP Setup
LABEL
DESCRIPTION
DHCP Setup
DHCP
If set to Server, your ZyXEL Device can assign IP addresses, an IP default
gateway and DNS servers to Windows 95, Windows NT and other systems that
support the DHCP client.
If set to None, the DHCP server will be disabled.
If set to Relay, the ZyXEL Device acts as a surrogate DHCP server and relays
DHCP requests and responses between the remote server and the clients.
Enter the IP address of the actual, remote DHCP server in the Remote DHCP
Server field in this case.
When DHCP is used, the following items need to be set:
IP Pool Starting
Address
This field specifies the first of the contiguous addresses in the IP address pool.
Pool Size
This field specifies the size, or count of the IP address pool.
Remote DHCP
Server
If Relay is selected in the DHCP field above then enter the IP address of the
actual remote DHCP server here.
DNS Server
DNS Servers
Assigned by DHCP
Server
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The ZyXEL Device passes a DNS (Domain Name System) server IP address to
the DHCP clients.
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Table 28 DHCP Setup
LABEL
DESCRIPTION
Primary DNS Server
Secondary DNS
Server
This field is not available when you set DHCP to Relay.
Enter the IP addresses of the DNS servers. The DNS servers are passed to the
DHCP clients along with the IP address and the subnet mask.
If the fields are left as 0.0.0.0, the ZyXEL Device acts as a DNS proxy and
forwards the DHCP client’s DNS query to the real DNS server learned through
IPCP and relays the response back to the computer.
Apply
Click Apply to save your changes back to the ZyXEL Device.
Reset
Click Reset to begin configuring this screen afresh.
6.5 LAN Client List
This table allows you to assign IP addresses on the LAN to specific individual computers
based on their MAC Addresses.
Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address
is assigned at the factory and consists of six pairs of hexadecimal characters, for example,
00:A0:C5:00:00:02.
To change your ZyXEL Device’s static DHCP settings, click Network > LAN > Client List.
The screen appears as shown.
Figure 53 LAN Client List
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The following table describes the labels in this screen.
Table 29 LAN Client List
LABEL
DESCRIPTION
IP Address
Enter the IP address that you want to assign to the computer on your LAN with the
MAC address specified below.
The IP address should be within the range of IP addresses you specified in the
DHCP Setup for the DHCP client.
MAC Address
Enter the MAC address of a computer on your LAN.
Add
Click Add to add a static DHCP entry.
This is the index number of the static IP table entry (row).
Status
This field displays whether the client is connected to the ZyXEL Device.
Host Name
This field displays the computer host name.
IP Address
This field displays the IP address relative to the # field listed above.
MAC Address
The MAC (Media Access Control) or Ethernet address on a LAN (Local Area
Network) is unique to your computer (six pairs of hexadecimal notation).
A network interface card such as an Ethernet adapter has a hardwired address
that is assigned at the factory. This address follows an industry standard that
ensures no other adapter has a similar address.
Reserve
Select the check box(es) in each entry to have the ZyXEL Device always assign
the selected entry(ies)’s IP address(es) to the corresponding MAC address(es)
(and host name(s)). You can select up to 32 entries in this table.
Modify
Click the modify icon to have the IP address field editable and change it.
Apply
Click Apply to save your changes back to the ZyXEL Device.
Cancel
Click Cancel to begin configuring this screen afresh.
Refresh
Click Refresh to reload the DHCP table.
6.6 LAN IP Alias
IP alias allows you to partition a physical network into different logical networks over the
same Ethernet interface. The ZyXEL Device supports three logical LAN interfaces via its
single physical Ethernet interface with the ZyXEL Device itself as the gateway for each LAN
network.
When you use IP alias, you can also configure firewall rules to control access between the
LAN's logical networks (subnets).
Note: Make sure that the subnets of the logical networks do not overlap.
The following figure shows a LAN divided into subnets A, B, and C.
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Figure 54 Physical Network & Partitioned Logical Networks
To change your ZyXEL Device’s IP alias settings, click Network > LAN > IP Alias. The
screen appears as shown.
Figure 55 LAN IP Alias
The following table describes the labels in this screen.
Table 30 LAN IP Alias
105
LABEL
DESCRIPTION
IP Alias 1, 2
Select the check box to configure another LAN network for the ZyXEL Device.
IP Address
Enter the IP address of your ZyXEL Device in dotted decimal notation.
Alternatively, click the right mouse button to copy and/or paste the IP address.
IP Subnet Mask
Your ZyXEL Device will automatically calculate the subnet mask based on the IP
address that you assign. Unless you are implementing subnetting, use the subnet
mask computed by the ZyXEL Device.
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Table 30 LAN IP Alias
LABEL
DESCRIPTION
RIP Direction
RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to
exchange routing information with other routers. The RIP Direction field controls
the sending and receiving of RIP packets. Select the RIP direction from Both/In
Only/Out Only/None. When set to Both or Out Only, the ZyXEL Device will
broadcast its routing table periodically. When set to Both or In Only, it will
incorporate the RIP information that it receives; when set to None, it will not send
any RIP packets and will ignore any RIP packets received.
RIP Version
The RIP Version field controls the format and the broadcasting method of the RIP
packets that the ZyXEL Device sends (it recognizes both formats when receiving).
RIP-1 is universally supported but RIP-2 carries more information. RIP-1 is
probably adequate for most networks, unless you have an unusual network
topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the
difference being that RIP-2B uses subnet broadcasting while RIP-2M uses
multicasting. Multicasting can reduce the load on non-router machines since they
generally do not listen to the RIP multicast address and so will not receive the RIP
packets. However, if one router uses multicasting, then all routers on your network
must use multicasting, also. By default, RIP direction is set to Both and the
Version set to RIP-1.
Apply
Click Apply to save your changes back to the ZyXEL Device.
Cancel
Click Cancel to begin configuring this screen afresh.
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CHAPTER 7
Wireless LAN
This chapter discusses how to configure the wireless network settings in your ZyXEL Device.
See the appendices for more detailed information about wireless networks.
7.1 Wireless Network Overview
The following figure provides an example of a wireless network.
Figure 56 Example of a Wireless Network
The wireless network is the part in the blue circle. In this wireless network, devices A and B
are called wireless clients. The wireless clients use the access point (AP) to interact with other
devices (such as the printer) or with the Internet. Your ZyXEL Device is the AP.
Every wireless network must follow these basic guidelines.
• Every wireless client in the same wireless network must use the same SSID.
The SSID is the name of the wireless network. It stands for Service Set IDentity.
• If two wireless networks overlap, they should use different channels.
Like radio stations or television channels, each wireless network uses a specific channel,
or frequency, to send and receive information.
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• Every wireless client in the same wireless network must use security compatible with the
AP.
Security stops unauthorized devices from using the wireless network. It can also protect
the information that is sent in the wireless network.
7.2 Wireless Security Overview
The following sections introduce different types of wireless security you can set up in the
wireless network.
7.2.1 SSID
Normally, the AP acts like a beacon and regularly broadcasts the SSID in the area. You can
hide the SSID instead, in which case the AP does not broadcast the SSID. In addition, you
should change the default SSID to something that is difficult to guess.
This type of security is fairly weak, however, because there are ways for unauthorized devices
to get the SSID. In addition, unauthorized devices can still see the information that is sent in
the wireless network.
7.2.2 MAC Address Filter
Every wireless client has a unique identification number, called a MAC address.1 A MAC
address is usually written using twelve hexadecimal characters2; for example, 00A0C5000002
or 00:A0:C5:00:00:02. To get the MAC address for each wireless client, see the appropriate
User’s Guide or other documentation.
You can use the MAC address filter to tell the AP which wireless clients are allowed or not
allowed to use the wireless network. If a wireless client is allowed to use the wireless network,
it still has to have the correct settings (SSID, channel, and security). If a wireless client is not
allowed to use the wireless network, it does not matter if it has the correct settings.
This type of security does not protect the information that is sent in the wireless network.
Furthermore, there are ways for unauthorized devices to get the MAC address of an authorized
wireless client. Then, they can use that MAC address to use the wireless network.
109
1.
Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless
networks. These kinds of wireless devices might not have MAC addresses.
2.
Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.
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7.2.3 User Authentication
Authentication is the process of verifying whether a wireless device is allowed to use the
wireless network. You can make every user log in to the wireless network before they can use
it. This is called user authentication. However, every wireless client in the wireless network
has to support IEEE 802.1x to do this.
For wireless networks, there are two typical places to store the user names and passwords for
each user.
• In the AP: this feature is called a local user database or a local database.
• In a RADIUS server: this is a server used in businesses more than in homes.
If your AP does not provide a local user database and if you do not have a RADIUS server,
you cannot set up user names and passwords for your users.
Unauthorized devices can still see the information that is sent in the wireless network, even if
they cannot use the wireless network. Furthermore, there are ways for unauthorized wireless
users to get a valid user name and password. Then, they can use that user name and password
to use the wireless network.
Local user databases also have an additional limitation that is explained in the next section.
7.2.4 Encryption
Wireless networks can use encryption to protect the information that is sent in the wireless
network. Encryption is like a secret code. If you do not know the secret code, you cannot
understand the message.
The types of encryption you can choose depend on the type of user authentication. (See User
Authentication on page 110 for information about this.)
Table 31 Types of Encryption for Each Type of Authentication
No Authentication
Weakest
RADIUS Server
No Security
Static WEP
Strongest
WPA-PSK
WPA
WPA2-PSK
WPA2
For example, if the wireless network has a RADIUS server, you can choose WPA or WPA2.
If users do not log in to the wireless network, you can choose no encryption, Static WEP,
WPA-PSK, or WPA2-PSK.
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Usually, you should set up the strongest encryption that every wireless client in the wireless
network supports. For example, suppose the AP does not have a local user database, and you
do not have a RADIUS server. Therefore, there is no user authentication. Suppose the wireless
network has two wireless clients. Device A only supports WEP, and device B supports WEP
and WPA. Therefore, you should set up Static WEP in the wireless network.
Note: It is recommended that wireless networks use WPA-PSK, WPA, or stronger
encryption. IEEE 802.1x and WEP encryption are better than none at all, but it
is still possible for unauthorized devices to figure out the original information
pretty quickly.
It is not possible to use WPA-PSK, WPA or stronger encryption with a local
user database. In this case, it is better to set up stronger encryption with no
authentication than to set up weaker encryption with the local user database.
When you select WPA2 or WPA2-PSK in your ZyXEL Device, you can also select an option
(WPA compatible) to support WPA as well. In this case, if some wireless clients support
WPA and some support WPA2, you should set up WPA2-PSK or WPA2 (depending on the
type of wireless network login) and select the WPA compatible option in the ZyXEL Device.
Many types of encryption use a key to protect the information in the wireless network. The
longer the key, the stronger the encryption. Every wireless client in the wireless network must
have the same key.
7.2.5 One-Touch Intelligent Security Technology (OTIST)
With ZyXEL’s OTIST, you set up the SSID and WPA-PSK on the ZyXEL Device. Then, the
ZyXEL Device transfers them to the devices in the wireless networks. As a result, you do not
have to set up the SSID and encryption on every device in the wireless network.
The devices in the wireless network have to support OTIST, and they have to be in range of
the ZyXEL Device when you activate it. See OTIST on page 120 for more details.
7.3 Wireless Performance Overview
The following sections introduce different ways to improve the performance of the wireless
network.
7.3.1 Quality of Service (QoS)
You can turn on Wi-Fi MultiMedia (WMM) QoS to improve the performance of voice and
video applications in the wireless network. QoS gives high priority to voice and video, which
makes them run more smoothly. Similarly, it gives low priority to many large file downloads
so that they do not reduce the quality of other applications.
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7.4 General Wireless LAN Screen
Note: If you are configuring the ZyXEL Device from a computer connected to the
wireless LAN and you change the ZyXEL Device’s SSID or WEP settings, you
will lose your wireless connection when you press Apply to confirm. You must
then change the wireless settings of your computer to match the ZyXEL
Device’s new settings.
Click Network > Wireless LAN to open the General screen.
Figure 57 Wireless LAN: General
The following table describes the general wireless LAN labels in this screen.
Table 32 Wireless LAN: General
LABEL
DESCRIPTION
Active Wireless Click the check box to activate wireless LAN.
LAN
Network
Name(SSID)
(Service Set IDentity) The SSID identifies the Service Set with which a wireless client
is associated. Wireless clients associating to the access point (AP) must have the
same SSID. Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for
the wireless LAN.
Note: If you are configuring the ZyXEL Device from a computer
connected to the wireless LAN and you change the ZyXEL
Device’s SSID or WEP settings, you will lose your wireless
connection when you press Apply to confirm. You must then
change the wireless settings of your computer to match the
ZyXEL Device’s new settings.
Hide SSID
Select this check box to hide the SSID in the outgoing beacon frame so a station
cannot obtain the SSID through scanning using a site survey tool.
Channel
Selection
Set the operating frequency/channel depending on your particular region.
Select a channel from the drop-down list box.
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Table 32 Wireless LAN: General
LABEL
DESCRIPTION
Apply
Click Apply to save your changes back to the ZyXEL Device.
Cancel
Click Cancel to reload the previous configuration for this screen.
Advanced
Setup
Click Advanced Setup to display the Wireless Advanced Setup screen and edit
more details of your WLAN setup.
See the rest of this chapter for information on the other labels in this screen.
7.4.1 No Security
Select No Security to allow wireless clients to communicate with the access points without
any data encryption.
Note: If you do not enable any wireless security on your ZyXEL Device, your network
is accessible to any wireless networking device that is within range.
Figure 58 Wireless: No Security
The following table describes the labels in this screen.
Table 33 Wireless No Security
113
LABEL
DESCRIPTION
Security Mode
Choose No Security from the drop-down list box.
Apply
Click Apply to save your changes back to the ZyXEL Device.
Cancel
Click Cancel to reload the previous configuration for this screen.
Advanced
Setup
Click Advanced Setup to display the Wireless Advanced Setup screen and edit
more details of your WLAN setup.
Chapter 7 Wireless LAN

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Encryption                      : Standard V1.2 (40-bit)
User Access                     : Print, Fill forms, Extract, Assemble, Print high-res
Modify Date                     : 2006:10:14 11:08:20+08:00
Create Date                     : 2006:07:04 09:07:50Z
Page Count                      : 35
Creation Date                   : 2006:07:04 09:07:50Z
Mod Date                        : 2006:10:14 11:08:20+08:00
Producer                        : Acrobat Distiller 5.0.5 (Windows)
Author                          : Cindy Yang
Metadata Date                   : 2006:10:14 11:08:20+08:00
Creator                         : Cindy Yang
Title                           : P-660H/HW/W T Series V3.40 User’s Guide
Has XFA                         : No
Page Mode                       : UseOutlines

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