Setting up a home network

A Home Networking Primer

Ewing Seniornet
David Shinkfield
November 2006

What are MY benefits of a
Home network?
I can use my laptop anywhere in my home
without any wires – in the Family Room
while watching TV or in the kitchen to
check a recipe
 I have given myself an additional (and
strong) level of protection against the
“nasties of the web”
 My children can easily access the internet
when they visit

Our discussion today
 What is a Home network?
 What are the benefits of a Home
network?
 What equipment is needed to build a
Home Network?
 Buying any additional equipment you
need
 Which technology (wired or wireless) is
best for my Home Network
 Setting up your Home Network
 How can a wireless network be secured?

What are the benefits of a
Home network?
With home networking, you can:
 Share one Internet connection with all of
the computers on the network.
 Share printers with all of the computers on
the network.
 Work on files stored on any computer on
the network.
 Use one computer to secure your entire
network and protect your Internet
connection.
 Play multiplayer games.

What are MY benefits of a
Home network?
With home networking:
 I can use my laptop anywhere in my home
without any wires – in the Family Room while
watching TV or in the kitchen to check a recipe
 I have given myself an additional (and strong)
level of protection against the “nasties of the
web”.
 My children can easily access the internet when
they visit

What equipment is needed
to build a Home Network?
Router
Network
Adapters

Cables Modem

 Sketch out your network, showing each
computer and printer.
 Next to each computer, note the hardware,
such as modems and network adapters,
installed on each computer.
 Determine the type of network adapters, if
any, you need for your network
 Make a list of hardware that you need to
buy.

 If you have a dial up connection, you will
already have the modem installed in your
computer
 All recent computers will have Network
Adapters already installed
 If you have broadband (Verizon or
Comcast), you will already have a modem
 Also, Verizon provides the router and
cables with their DSL or FIOS broadband
connection

Buying any additional
equipment you need
Routers cost between $35 and
$100. This is a Linksys Router
for wired connection. A
Wireless Router is slightly
more expensive than a wired
one.
Cables are about $10-20
depending on the length you
need. They are called CAT5
cables

Routers
 Wireless routers have different “speeds” –
B, G or A
– B is an older specification. It is slow and
routers with wireless B are very
inexpensive
– G is the current specification.
– A is primarily for business
 Match your router to your laptop

Wired or wireless

Wired Pluses Wireless Pluses
 Easier to set up  Works all over the

 Perhaps more
house
 Friends can easily
secure?
connect – with
 Routers less your permission
expensive Wireless Minuses
Wired Minuses  Needs more
 The cabling security settings

Setting up your Home Network
 Connect ONLY the first wired
computer to the Router and the
Router to the Modem
 Access the Router and set the
connection method.
– Verizon DSL uses PPPOE. You will need
your user ID and password

Next,
 Click “Start” and “My Network
Places”
 Under Network Tasks on the left,
select “Set up a home or small office
network”
 Follow the Wizard, and write down
the settings

 When the first computer connects to the
Internet, connect the second computer,
and run the appropriate Wizard
– For wired computers - “Set up a home or small
office network”
– For wireless computers – “Set up a wireless
network for home or small office”
 When both computers connect to the
Internet, set up Security Settings and File
and Printer Sharing

How can a wireless network
be secured?

Computer security
Router security
Wireless Security
Sharing printers and files

Computer security
 Make sure that you have all the latest
Microsoft patches installed.
 Make sure that your Virus protection
is installed and that it is regularly
updated
 Install a good software firewall
 Check status with Windows Security
Center

Computer security
 Make sure that you have all the latest
Microsoft patches installed.
 Make sure that your Virus protection is
installed and that it is regularly updated
 Install a good software firewall
 Check status with Windows Security
Center
 Regularly run Spyware removal programs
 If you use Microsoft Office or any of its
components, such as Word or Excel, make
sure that you update that as well

Router security
 Therouter comes with a set up screen,
which you access using 192.168.1.1 in the
address bar of your browser, and then
entering a password

Router security
 Thedefault passwords for routers are well
known - mine was Admin. You need to
change this to something that will prevent
someone accessing your network from
gaining access to the settings.

Router security
 You can only set up the Router through a
computer that is connected to the Router
by a wire.
 Once the Router is set, the computer can
be unplugged and used wirelessly if
necessary.

Wireless Security
The key requirement for wireless security is to
stop others from accessing your network.

Have a hardware firewall in addition to your
software firewall
Encrypt all data traffic between the wireless
computer and the router
Protect that encryption with network names
and passwords
Prevent the network broadcasting its name to
the world
Only authorize access to named computers

Wireless Security
 Your Router should include an SPI and
NAT firewall.
 Make sure that it is turned on

Wireless Security
 Give a name for the network.
 This is the SSID.

Disable SSID
Broadcast

Wireless Security
Set the Security Mode to WPA or better yet,
WPA2.
Set WPA Algorithms to TKIP
Set the WPA Shared Key.

Wireless Security
Finally, only authorize access to named
computers

 Set a MAC Filter for all computers using
the wireless network.
 Each computer has a unique identification
number called the MAC Address.
You only need to enter the MAC Addresses for
computers accessing the network wirelessly.
You do not need to include computers that are
wired to the router.

Wireless Security
Finding the MAC Address

 Goto Start, and
then Run.

Wireless Security
 Type CMD in the box and a window will open.

Wireless Security
 At the flashing cursor, type ipconfig/all and
hit Enter.
 You will see information including Physical
Address in the form of 00-01-AX-B3-DY-71

Wireless Security

Physical
Address

Wireless Security
Now back to the Router

Wireless Security

Wireless Security
 The final step in the process is to make
sure that you set up identical settings on
the laptop or wireless computer
– the same Mode,
– the same SSID and
– the same shared key

 Ifyou plan to access files or a printer
between computers, you will need to allow
Sharing for the Printer and the appropriate
folders

 Check “Share the
printer”
 Give the shared
printer a descriptive
name

 Ifyou share
folders, you
will need to tell
Zone Alarm
that to allow
the access.
 Open the Zone
Alarm Control
Center, and
select Firewall
on the left.

 Select the Zone
tab at the top.
 Click Add
 Select IP Range.
 Enter a range
such as
192.168.1.100 to
192.168.1.103

Now it all works!!

And is secure!

The Presentation Web Site

http://snipurl.com/homenetwork

Setting up a home network

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