Internet Connection Sharing (ICS) setup
On the computer that is connected directly to the Internet.
Do these steps to share an Internet connection. (You are assumed
to have configured your Internet connection before. If not, use
the
New Connection Wizard
then.)
1. Open Network Connections folder.
2. On the right pane, find the Internet connection that you want
to share. Right-click on it and select Properties. While the
most likely case is sharing a wireline broadband (DSL/cable) service,
basically you can share any type of Internet connection
(including PSTN dial-up, GPRS, 3G, FTTH, WiMAX, etc) using the same procedure.
If your broadband connection is using login (PPPoE) and you log in
from Network Connections folder, you'll find the Internet
connection under Broadband. If your broadband
connection is always on, your Internet connection must be under
LAN or High-Speed Internet. Find the Local Area
Connection that corresponds with the Ethernet card which
connects the host computer to the broadband modem. Rename it to
a name that easily identifies your Internet connection. Follow
the same procedure to enable ICS.
Figure. Opening an Internet connection properties window from Network Connections
to create Internet connection sharing (ICS). Select the relevant Internet connection.
3. On the Advanced tab, check "Allow other network users to
connect through this computer's Internet connection" and select
"Wireless Network Connection" from the drop-down box. The
drop-down box only appears if there are more than one network
adapters installed in your computer.
If you don't find ICS options on Properties window, the most
likely case is your Wi-Fi ad hoc network hasn't been connected.
Try to reconfigure it.
Figure. Configuring Internet Connection Sharing (ICS) for
the Wi-Fi ad hoc network
via the Internet connection Properties window.
4. Click OK. You can verify whether your wireless LAN (ad hoc) and
ICS have been working from the IP addresses of your Wi-Fi
adapters. If the IP addresses are APIPA
addresses in this format 169.254.x.y (where x and y
are any integer from 0 to 254) with
the same subnet (i.e. 255.255.0.0), then your ad hoc network has
been active. Browse your network configuration from My Network
Places. If you have configured your
personal firewall to allow file and printer sharing (which is
the default setting in Windows Firewall), you will
see both your computers in My Network Places>Microsoft Windows
Network>your workgroup name.
Meanwhile, for the ICS to work your Wi-Fi network adapter on the ICS host
computer (which connects directly to the broadband modem) must
have been assigned this private gateway IP address 192.168.0.1 and the ICS
client (which will connect to the Internet via the ICS host) must have another IP
address in this format 192.168.0.z where z is any integer
from 2 to 254.
To have IP addresses assigned automatically by Windows, you just
need to make sure that your Wi-Fi adapters are set to obtain IP
address and DNS server address automatically (DHCP) which is the
default configuration. To verify, right click your Wireless
Network Connection, and select Properties. On the General tab,
select Internet
Protocol (TCP/IP) Properties.
Now you have finished the Wi-Fi ad-hoc network setup and enabled
Internet connection sharing. To access another computer
resources (i.e. files, folders, drives, printer, peripherals),
you must enable sharing with other network users for each resource.
Figure. Viewing details of a Wireless Network Connection via the status window
You can see among others: number of transferred packets, duration, signal strength, and IP address.
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