Making the Wireless Home Network Connection in Windows XP

Making the Wireless Home Network Connection in Windows XP
Making the Wireless Home Network Connection in Windows
XP without a Router
In this experiment, client computers will be connected to the Internet via ad hoc network.
We will start with same steps in Experiment # 1, in which we created an ad hoc network,
and then we add Internet Connection Sharing on the host computer and all connected
computers will be surfing the net wirelessly in no time at all.
We will start with a single computer that already has a wired Ethernet broadband
connection to the Internet. Then we'll build the ad hoc wireless network in three steps:
As you read through the procedures below, note that the accompanying images are
captured from both the host and client computers and that the screen shots of the host
computer contain a silver title bar, while the client computer screen shots contain a blue
title bar.
Use the Internet Connection Firewall
Before we process we configure the Internet Connection Sharing we should configure the
firewall. A firewall is a security system that acts as a protective boundary between a
network and the outside world. Windows XP includes Internet Connection Firewall (ICF)
software you can use to restrict what information is communicated between the Internet
and your home or small office network. ICF also protects a single computer connected to
the Internet with a cable modem, a DSL modem, or a dial–up modem.
Note: If you are running Windows XP Service Pack 2 (SP2) your firewall is turned on
automatically. To learn more see,
http://www.microsoft.com/windowsxp/using/security/internet/sp2_wfintro.mspx
If your network uses Internet Connection Sharing (ICS) to provide Internet access to
multiple computers, you should use ICF on the shared Internet connection. However, ICS
and ICF can be enabled separately. You should not enable the firewall on any connection
that does not directly connect to the Internet. ICF is not needed if you already have a
firewall or proxy server on your network in your home or office.
You must be logged on to your computer with an administrator account in order to enable
the firewall.
You should not enable Internet Connection Firewall on virtual private networking (VPN)
connections, which are typically used to securely log in to a corporate network. You
should not enable ICF on client computers that are part of a large company or school
network with a server-client structure. ICF will interfere with file and printer sharing in
these scenarios.
If you are sharing an Internet connection, enable the firewall only on the host computer
that is connected to the Internet. The host computer appears to the Internet as the only
computer on the Internet, hiding the computers in your home network, read more about
Network Address Translator (NAT). The host computer with ICF enabled provides a
single point of security for your host computer and home network computers. In such
home networks, computers running earlier versions of Windows are protected without the
need
for
additional
firewalls.
See
the
illustrations
in
this
http://www.microsoft.com/windowsxp/using/networking/expert/davies_july30.mspx
article to help you understand where ICF should be enabled on your home network.
To enable or disable Internet Connection Firewall
1.
Open Network Connections (Click Start, click Control Panel, and then double–click
Network Connections. In Category View, click Network Connections.
2. Click to select the Dial–up, LAN or High–Speed Internet connection that you want to
protect as shown in Figure 1 below.
Figure 1
3. In the task pane on the left, under Network Tasks, click Change settings of this
connection as shown in Figure 2 below.
Figure 2
4. On the Advanced tab as shown in Figure 3 below, under Internet Connection
Firewall, select one of the following:
• To enable Internet Connection Firewall (ICF), select the Protect my computer and
network by limiting or preventing access to this computer from the Internet check
box.
• To disable Internet Connection Firewall, clear the Protect my computer and network
by limiting or preventing access to this computer from the Internet check box. This
disables the firewall; your computer and network are then vulnerable to intrusions.
Figure 3
Sharing the Connection
After a successful ad hoc wireless network has been created, we will set up Internet
Connection Sharing.
1. Open Network Connections on the host computer. (Click Start, click Control Panel,
click Switch to classic view, and then click Network Connections.
2. Click the connection to be shared, and under Network Tasks, click Change settings
of this connection.
3. On the Advanced tab, select the Allow other network users to connect through this
computer's Internet connection check box.
4. If you are not using a third party firewall and have not already set up the Internet
Connection Firewall (ICF), be sure to check the box enabling this feature.
5. Finally, optionally enable the setting to let other users control or enable this
connection.
After completing ICS configuration, the Network Connection window on the host
computer will display the original wired Ethernet connection and display the status as
Shared as well as Enabled. The Network Connection window on the client computer
will display the connection on the host as an Internet Gateway.
Figure 5
The client computer(s) should now receive a private class, non-routable IP address in the
192.168.0.* address range via DHCP from the host computer and should have full
Internet connectivity.
References:
1. http://www.microsoft.com/windowsxp/using/networking/expert/bowman_02april08.
mspx
2. http://www.microsoft.com/windowsxp/using/security/internet/sp2_wfintro.mspx
3. http://www.microsoft.com/windowsxp/using/networking/expert/davies_july30.mspx
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