3Com 3CR856-95 - OfficeConnect Cable/DSL Secure Gateway 설치 매뉴얼 - 페이지 2
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1
INSTALLING YOUR GATEWAY
Before you install and configure your Gateway, you need the following
additional information. If you do not have this information, contact your Internet
Service Provider. Space is provided below for you to record this information.
If you have a DSL connection and your ISP allocates IP information
dynamically over PPPoE, you need your User Name and Password. Some ISPs
may also require a Service Name.
PPPoE User Name
PPPoE Password
PPPoE Service name
If your ISP allocates fixed or static IP information, you need the
following information:
IP Address
_______._______._______._______
Subnet Mask
_______._______._______._______
Default Gateway address
_______._______._______._______
DNS address
_______._______._______._______
If your ISP allocates IP information dynamically over a protocol other
then PPPoE, you do not need any further information.
Connecting Your Gateway
1. Use the supplied cable to connect the Gateway's Ethernet Cable/DSL
port to your Cable/DSL modem. Ensure that your modem is
connected to the Internet and switched on.
2. Connect your computer to one of the 10/100 LAN ports on the Gateway.
3. Connect the power adapter to the Gateway and wait for the Alert LED
to stop flashing. Check that the Cable/DSL Status LED is illuminated.
4. Switch on your computer. Once your computer is ready to use,
check that the LAN Port Status LED on the Gateway is illuminated.
Refer to Figure 6 for an example configuration.
3
CONFIGURING YOUR GATEWAY
Keeping Your Existing IP Configuration
If you don't want to change your IP infrastructure or have static IP addresses
the Discovery Application, found on the accompanying CD, can be used to
locate the Gateway. You can then use the Configuration Wizard to set its IP
parameters.
Refer to the User Guide for more details.
Running the Configuration Wizard
1. If you haven't already done so, restart your computer.
2. Launch your web browser and attempt to contact the Gateway by
typing the following URL in the location bar: http://192.168.1.1, If
you are able to access the Login page, then your computer has
correctly received an IP address from the Gateway.
3. Login using the default password admin. The Wizard will attempt to
launch automatically, but if it fails, select the Wizard tab and click on
the Wizard... button.
4. Where possible, the wizard will recommend settings for most
parameters. However, there are some settings which you must
provide. Most of these will have been provided to you by your ISP
when you set the account up. Refer to section 1 for details.
5. By default, 3Com recommends that you leave the LAN IP address for
the Gateway as 192.168.1.1. However, if you should choose to
change it, make a note of the new address :
Gateway's LAN IP Address
_______._______._______._______
6. When the DHCP Server Settings page is displayed, make sure that the
Enable the DHCP Server with the following settings option is selected.
2
CHANGING YOUR COMPUTER'S CONFIGURATION
You may need to make some changes to the configuration of your computers in
order to communicate with the Gateway.
DSL Users with PPPoE Client Software
If you have PPPoE client software installed on your
computer, you will need to disable it. To do this:
1. From the Windows Start menu, select Settings
> Control Panel.
2. Double click on Internet Options.
3. Select the Connections Tab. A screen similar to
Figure 1 should be displayed.
4. Select the Never Dial a Connection option and
click OK.
You may wish to remove the PPPoE client software
from your computer to free resources, as it is not
Figure 1
required for use with the Gateway.
Obtaining an IP Address automatically
Follow the instructions below for your particular operating system to ensure that
your computers are configured to obtain an IP address automatically.
For computers using Windows 2000.
1. From the Windows Start Menu, select Settings >
Control Panel.
2. Double click on Network and Dial-Up connections
3. Double click on Local Area Connection.
4. Click on Properties.
5. A screen similar to Figure 2 should be displayed.
Select Internet Protocol TCP/IP and click on Properties.
6. Ensure that the options Obtain an IP Address
automatically, and Obtain DNS servers automatically
are both selected as shown in Figure 3. Click OK.
7. Restart your computer.
Connecting to the Internet
When the Wizard has completed, attempt to browse to an Internet web site,
such as www.3com.com. If you can successfully access this site, then your
computer, Gateway and internet modem have been correctly configured.
Now that you have successfully configured your Gateway 3Com
recommends, as part of our continuous improvement process, you download
the latest firmware from the web at www.3com.com.
Refer to the Problem Solving section if you cannot make contact with the
Gateway or the Internet.
Connecting Additional Computers
You may now connect additional computers to the remaining 10/100 LAN
ports on the Gateway. Ensure that each computer you connect to the
Gateway has been configured as described in section 2. You should restart
each computer whilst it is connected to the Gateway before you try to use it
to access the Internet.
For computers using Windows 95, 98 and ME.
1. From the Windows Start Menu, select Settings > Control Panel.
2. Double click on Network. Select the TCP/IP item for your network card as
shown in Figure 4 and click on Properties.
3. In the TCP/IP dialog, select the IP Address tab, and ensure that Obtain IP
address automatically is selected as shown in Figure 5. Click OK.
4. Restart your computer.
For computers using Windows XP.
1. From the Windows Start menu, select Control Panel
2. Click on Network and Internet Connections
3. Click on the Network Connections icon
4. Double click on LAN or High Speed Connection icon. A screen titled Local
Area Connection Status will appear
5. Select Internet Protocol TCP/IP and click on Properties.
6. Ensure that the options Obtain an IP Address automatically, and Obtain
DNS servers automatically are both selected as shown in Figure 3. Click OK.
7. Restart your computer.
Figure 2
Figure 3
Figure 4
PROBLEM SOLVING
If you are experiencing difficulties with your installation, try the following:
• Ensure all networking equipment is switched on. The Gateway
should be showing a green Power LED. If it is not, check the power
adapter connection. Do not use any power adapter with your Gateway
other than the one supplied.
• Ensure the Cable/DSL Modem is connected. The Gateway should
be displaying a green or yellow Cable/DSL Status LED. If no LED is
displayed, check that your modem is switched on and that it is
connected to the Cable/DSL port with an Ethernet cable.
• Ensure that the computer is connected to the Gateway. The
Gateway should be displaying a green or yellow LAN Status LED. If it is
not, check that the computer is connected to one of the Gateway's
LAN ports with an Ethernet cable.
• Ensure your computer is configured correctly. Make sure that the
computer obtains an IP address automatically. See Section 2 for details.
Ensure that the NIC card is configured for autonegotiation.
• Ensure that you do not have a web proxy enabled on your
computer. Go to the Control Panel and click on Internet Options.
Select the Connections tab and click on the LAN Settings button at the
bottom. Make sure that the Use Proxy Server option is unchecked.
• If you are unable to access the Gateway's Web interface.
Launch a web browser and enter http://192.168.1.1. If you chose a
different IP address, use that instead. Ensure that you include the
http:// prefix.
• If you cannot remember the Gateway IP address. Run the
Gateway Discovery application from the CD-ROM. This will always
connect you to the Gateway.
Your existing
Cable/DSL
Modem
Figure 6
Example Network with OfficeConnect Cable/DSL Secure Gateway.
Figure 5
Cable Internet Connections.
• Some Cable providers authenticate to the user's computer MAC
address. If this is required, go to Internet Settings > Advanced and
select Clone the MAC Address. This will copy the MAC address of
your computer onto the Internet port of the Gateway.
• Some Cable providers authenticate to the user's Host Name. If this is
required, go to Internet Settings and enter the host name of your
computer into the Host Name field.
DSL Internet Connections.
• If you have an existing DSL line and have PPPoE client software
installed on your computer, you will need to disable it. See section 2.
• If your DSL line is using PPPoE, go to Internet Settings and ensure that
PPPoE is enabled. Check that your PPPoE User name and Password are
correct
• Some DSL providers require the use of a PPPoE Service Name. If this is
required, go to Internet Settings and enter the PPPoE Service Name in
the field provided. If it is not required, you must leave it blank.
For further Problem Solving and Technical Support information,
refer to the Gateway User Guide.
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