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Chapter 5: Configuring the ADSL Gateway
The Applications & Gaming Tab
ADSL Gateway
The Port Range Forwarding Tab
The
Port Range Forwarding
screen sets up public services on your network, such as web servers, ftp servers, e-
mail servers, or other specialized Internet applications. (Specialized Internet applications are any applications
that use Internet access to perform functions such as videoconferencing or online gaming. Some Internet
applications may not require any forwarding.)
When users send this type of request to your network via the Internet, the Gateway will forward those requests to
the appropriate computer. Any computer whose port is being forwarded should have its DHCP client function
disabled and should have a new static IP address assigned to it because its IP address may change when using
the DHCP function.
•
Application. Enter the name of the application in the field provided.
•
Start and End. Enter the starting and ending numbers of the port range you wish to forward.
•
Protocol. Select the protocol you wish to use for each application:
TCP
,
UDP
, or
Both
.
•
IP Address. Enter the IP Address of the appropriate computer.
•
Enable. Click the
Enable
checkbox to enable forwarding for the chosen application.
When finished making your changes on this tab, click the
Save Settings
button to save these changes, or click
the
Cancel Changes
button to undo your changes.
IMPORTANT:
Enabling remote management allows anyone with your password to configure the
Gateway from somewhere else on the Internet.
Figure 5-28: Port Range Forwarding
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Page 37 / 79
31
Chapter 5: Configuring the ADSL Gateway
The Applications & Gaming Tab
ADSL Gateway
The Port Triggering Tab
Port Triggering is used for special applications that can request a port to be opened on demand. For this feature,
the Gateway will watch outgoing data for specific port numbers. The Gateway will remember the IP address of the
computer that sends a transmission requesting data, so that when the requested data returns through the
Gateway, the data is pulled back to the proper computer by way of IP address and port mapping rules.
•
Application. Enter the name you wish to give each application.
•
Triggered Range. Enter the starting and ending port numbers of the Triggered Range.
•
Forwarded Range. Enter the starting and ending port numbers of the Forwarded Range.
•
Enable. Click the
Enable
checkbox to enable port triggering for the chosen application.
When finished making your changes on this tab, click the
Save Settings
button to save these changes, or click
the
Cancel Changes
button to undo your changes.
The DMZ Tab
The
DMZ
screen allows one local user to be exposed to the Internet for use of a special-purpose service such as
Internet gaming and videoconferencing through DMZ Hosting. DMZ hosting forwards all the ports for one
computer at the same time, which differs from Port Range Forwarding, which can only forward a maximum of 10
ranges of ports.
•
DMZ Hosting. This feature allows one local user to be exposed to the Internet for use of a special-purpose
service such as Internet gaming and videoconferencing. To use this feature, select
Enable
. To disable DMZ,
select
Disable
.
•
DMZ Host IP Address. To expose one computer, enter the computer’s IP address. To get the IP address of a
computer, refer to “Appendix B: Finding the MAC Address and IP Address for Your Ethernet Adapter.”
When finished making your changes on this tab, click the
Save Settings
button to save these changes, or click
the
Cancel Changes
button to undo your changes.
Figure 5-29: Port Triggering
Figure 5-30: DMZ
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Page 38 / 79
32
Chapter 5: Configuring the ADSL Gateway
The Applications & Gaming Tab
ADSL Gateway
The QoS Tab
QoS
Quality of Service (QoS) ensures better service to high-priority types of network traffic, which may involve
demanding, real-time applications, such as Internet phone calls or videoconferencing.
Enabled/Disabled
. To use QoS, select
Enabled
. Otherwise, keep the default,
Disabled
.
PVC QoS Priority
PVC-based QoS assigns different levels of priority, or precedence, to different permanent virtual circuits. This is
useful when you have, for example, one PVC set up for traditional Internet services (Web browsing, e-mail, and
the like) and another PVC set up to carry time-sensitive data such as VoIP or IPTV streams. Giving the second PVC
a higher QoS level helps ensure the best possible voice or picture quality.
Edit list of QoS Settings
In addition to PVC-based QoS, you can assign different levels of priority to different packets based on information
in the packets. To do this, click the Edit list of QoS Settings button. A window titled QoS Function will appear.
This window lets you set the priority for packets selected by any of the following criteria, alone or in combination:
•
Destination. IP address and Netmask (address mask), FQDM (Fully Qualified Domain Name), or MAC address.
•
Source. IP address and Netmask (address mask), or MAC address
•
Protocol (Transport). TCP, UDP, or All.
•
Dst Port/Scr Port (Destination port and/or source port). If protocol is set to TCP or UDP.
•
Ethernet Type. The value in the 13th and 14th octets of an Ethernet frame.
•
ALG. Triggering of a particular Application Layer Gateway (FTP, TFTP, H.323, IRC, MMS, GRE, PPTP, or SIP).
•
802.1D User Priority. Presence of a specified IEEE 802.1D user priority marker.
•
802.1Q VID. Presence of a specified IEEE 802.1Q virtual LAN (VLAN) ID.
•
Packet length Min/Max. Packet length between specified minimum and maximum numbers of octets.
•
Priority. Set the priority of None, Low, Medium, or High.
Figure 5-31: QoS
Figure 5-32: Edit List of QoS Settings
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33
Chapter 5: Configuring the ADSL Gateway
The Applications & Gaming Tab
ADSL Gateway
Fragment packets’ size of AF and BE traffic to be equal to the size of EF traffic: Enable this option and input a
packet size to have large Assured Forwarding (medium priority) and Best Effort (low priority) packets fragmented
so they will not uduly delay Expedited Forwarding (high priority) packets. The value you enter should be from 68
to 1492.
When you have finished making changes in this window, click the
Save
button to save the changes, or click the
Cancel
button to undo your changes. Then click
Close
. You will be returned to the QoS panel. Click the
Save
Settings
button to save your changes, or click the
Cancel Changes
button to undo your changes.
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34
Chapter 5: Configuring the ADSL Gateway
The Administration Tab
ADSL Gateway
The Administration Tab
The Management Tab
The
Management
screen allows you to change the Gateway’s access settings as well as configure the SNMP
(Simple Network Management Protocol), UPnP (Universal Plug and Play), IGMP (Internet Group Multicast
Protocol)-Proxy, and WLAN management features.
Gateway Access
Local Gateway Access. To ensure the Gateway’s security, you will be asked for your password when you access
the Gateway’s Web-based Utility. The default username and password is
admin
.
•
Gateway Username. It is recommended that you change the username to one of your own choosing.
•
Gateway Passowrd. It is recommended that you change the password to one of your own choosing.
•
Re-enter to confirm. Re-enter the Gateway’s new password to confirm it.
Remote Gateway Access. This feature allows you to access the Gateway from a remote location, via the Internet.
•
Remote Management. This feature allows you to manage the Gateway from a remote location via the Internet.
To enable Remote Management, click
Enable
.
•
Remote Username. The default username for remove management is
tech
. It is recommended that you
change the remote username to one of your own choosing.
•
Remote Password. The default remote password is
admin
. It is recommended that you change this to a
password of your own choosing.
•
Re-enter to confirm. Re-enter the new remote password to confirm it.
•
Management Port. Enter the port number you will use to remotely access the Gateway.
•
Allowed IP. Specify the IP address(es) allowed to remotely manage the Gateway. To allow all IP addresses with
no restrictions, select
All
. To specify a single IP address, select
IP address
and enter the IP address in the
fields provided. To specify a range of IP addresses, select
IP range
and enter the range of IP addresses in the
fields provided.
Remote Upgrade. This feature allows the Gateway’s firmware to be upgraded remotely by a TFTP server. To
enable Remote Upgrade, click
Enable
.
Figure 5-33: Management
Figure 5-34: Allowed IP - IP Range
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