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Page 66 / 96 Scroll up to view Page 61 - 65
108 Mbps Wireless Router WGT624 v4 Reference Manual
5-6
Advanced Configuration
v1.0, May 2007
3.
Select the service type (TCP or UDP) from the Service Type drop-down list.
4.
Enter the
outbound
port number in the Triggering Port box.
5.
Enter the inbound connection port information:
a.
Connection type (TCP/UDP, TCP, or UDP)
b.
Starting port
c.
Ending port
For inbound connection information, see the game or applications manual or the product’s
support website.
Editing or Deleting a Service
To edit an existing service:
1.
From the Port Triggering page, select the service you want to edit from the list of services in
the Port Triggering Portmap Table.
2.
Click Edit Service or Delete Service, as required.
3.
If editing, change the service information on the Port Triggering - Services page, as described
in
“Adding a New Service” on page 5-5
, and then click
Apply.
WAN Setup Options
The WAN Setup options let you configure a DMZ server, change the MTU size, and enable the
wireless router to respond to a ping on the WAN port.
Figure 5-3
Page 67 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
Advanced Configuration
5-7
v1.0, May 2007
The WAN setup options are explained below:
•
Disable SPI Firewall.
Normally, this option should be enabled, so that your local network will be protected by the
stateful packet inspection (SPI) firewall included in the wireless router. However, certain
communications functions like VPN may require turning off the SPI feature.
•
Default DMZ Server.
The default DMZ server feature is helpful when you use some online games and
videoconferencing applications that are incompatible with NAT. The router is programmed to
recognize some of these applications and to work properly with them, but there are other
applications that may not function well. In some cases, one local computer can run the
application properly if that computer’s IP address is entered as the default DMZ server.
Incoming traffic from the Internet is normally discarded by the router unless the traffic is a
response to one of your local computers or a service that you have configured in the Ports
menu. Instead of discarding this traffic, you can have it forwarded to one computer on your
network. This computer is called the default DMZ server.
•
NAT Filtering.
This determines how your router handles inbound traffic. The Secured option provides a
secure firewall to protect the computers on the LAN from attacks from the Internet, but it may
cause some Internet games, point-to-point applications, or multimedia applications not to
work. The Open option provides less protection, but allows almost all Internet applications to
work.
•
Assigning a Default DMZ Server. See
“Assigning a Default DMZ Server” on page 5-8
.
Note:
When SPI firewall is disabled, you must use the Passive mode in the computer
FTP client to connect to the FTP server.
Note:
DMZ servers pose a security risk. A computer designated as the default DMZ
server loses much of the protection of the firewall, and is exposed to exploits
from the Internet. If compromised, the DMZ server can be used to attack your
network.
Page 68 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
5-8
Advanced Configuration
v1.0, May 2007
•
Respond to a Ping on the Internet WAN Port.
If you want the router to respond to a ping from the Internet, select this check box. This should
be used only as a diagnostic tool, since it allows your router to be discovered. Do not select
this check box unless you have a specific reason to do so.
•
Setting the MTU Size. In most cases it is not necessary to set the MTU size. See
“Setting the
MTU Size” on page 5-8
.
Assigning a Default DMZ Server
To assign a computer or server to be a default DMZ server:
1.
Click WAN Setup on the Advanced section of the main menu.
2.
Type the IP address for that server. To remove the default DMZ server, clear the Default DMZ
Server check box.
3.
Click
Apply
.
Setting the MTU Size
The default MTU size does not usually need to be changed. The normal maximum transmit unit
(MTU) value for most Ethernet networks is 1500 bytes. For some ISPs, particularly some using
PPPoE, you may need to reduce the MTU. You should not do this unless you are sure it is
necessary for your ISP.
Any packets sent through the router that are larger than the configured MTU size will be
repackaged into smaller packets to meet the MTU requirement.
To change the MTU size:
1.
Under MTU Size, enter a new size between 64 and 1500.
2.
Click
Apply
to save the new configuration.
Using a Dynamic DNS Service
If your network has a permanently assigned IP address, you can register a domain name and have
that name linked with your IP address by public domain name servers (DNS). However, if your
Internet account uses a dynamically assigned IP address, you will not know in advance what your
IP address will be, and the address can change frequently. In this case, you can use a commercial
dynamic DNS service that will allow you to register your domain to their IP address, and will
forward traffic directed at your domain to whatever your current IP address happens to be.
Page 69 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
Advanced Configuration
5-9
v1.0, May 2007
The router contains a client that can connect to many popular dynamic DNS services. You can
select one of these services and obtain an account with them. Then, whenever your ISP-assigned
IP address changes, your router will automatically contact your dynamic DNS service provider,
log in to your account, and register your new IP address.
From the wireless router’s main menu, under Advanced, click Dynamic DNS.
To configure dynamic DNS:
1.
Register for an account with one of the dynamic DNS service providers whose names appear
in the Select Service Provider box. For example, for dyndns.org, enter www.dyndns.org.
2.
Select the “Use a Dynamic DNS Service” check box.
3.
Select the name of your dynamic DNS Service Provider.
4.
Type the Host Name (or domain name) that your dynamic DNS service provider gave you.
5.
Type the User Name for your dynamic DNS account.
6.
Type the Password (or key) for your dynamic DNS account.
7.
If your dynamic DNS provider allows the use of wildcards in resolving your URL, you may
select the Use Wildcards check box to activate this feature.
Note:
If your ISP assigns a private WAN IP address (such as 192.168.x.x or 10.x.x.x), the
dynamic DNS service will not work because private addresses will not be routed
on the Internet.
Figure 5-4
Page 70 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
5-10
Advanced Configuration
v1.0, May 2007
For example, the wildcard feature will cause *.yourhost.dyndns.org to be aliased to the same
IP address as yourhost.dyndns.org
8.
Click
Apply
to save your configuration.
Using LAN IP Setup Options
The LAN IP Setup feature allows configuration of LAN IP services such as DHCP and RIP. From
the wireless router’s main menu, under Advanced, click LAN IP Setup.
The router is shipped preconfigured to use private IP addresses on the LAN side, and to act as a
DHCP server. The router’s default LAN IP configuration is:
•
LAN IP address—192.168.1.1
•
Subnet mask—255.255.255.0
These addresses are part of the IETF-designated private address range for use in private networks,
and should be suitable in most applications. If your network has a requirement to use a different IP
addressing scheme, you can make those changes in this menu.
Figure 5-5

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