Wireless Network Security For The Home

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20 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

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CSE 421

Computer Networks





Wireless Network Security for the
Home


Shahid Muhammad Asif

02201155


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Wireless Network Security
for

the

Home

Wireless networking is a great invention, but it comes with some security
concerns as well. According to a December
2004 study, 60 to 70 percent of
all wireless networks are insecure. Although there is lots of information on
securing wireless networks, most of this information focuses on corporate
networks. That’s why I will attempt to focus on securing the home wireles
s
networks.

Why is Wireless Security Important in
the Home?

Wireless security is as important in the home as it is important in
corporations. If there is an unsecured wireless network in someone’s home,
anyone in close proximity can spy on his online acti
vities. Depending on how
the home network is configured, someone could even gain full access to his
computer’s hard drive over an unsecured wireless network.

Even if no one is around that wants to spy or perform some malicious action
against an wireless n
etwork user, his neighbors could sponge off of his
Internet connection. This would not only deprive him of bandwidth that he is
paying for, but also if the neighbor conducted some illegal activity while
online, it could be traced back to the original user’
s network.

Securing
the

Wireless Network
for

the

Home


Although there are risks using wireless network, that doesn’t mean one
shouldn’t use wireless networking. All that is needed is to be smart about it
and take some basic precautions to make it more diff
icult for curiosity
seekers to access the network. There are six simple steps that can be taken
to secure the wireless network for home.


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1.

Change the System ID:

Devices come with a default system ID
called the SSID (Service Set Identifier) or ESSID (Extended

Service
Set Identifier). It is easy for a hacker to find out what the default
identifier is for each manufacturer of wireless equipment so you need
to change this to something else. Use something unique
-

not your
name or something easily guessed.

2.

Disable

Identifier Broadcasting:

Announcing that you have a
wireless connection to the world is an invitation for hackers. You
already know you have one so you don’t need to broadcast it. Check
the manual for your hardware and figure out how to disable
broadcasti
ng.


3.

Enable Encryption:

WEP (Wired Equivalent Privacy) and WPA (Wi
-
Fi
Protected Access) encrypt your data so that only the intended recipient
is supposed to be able to read it. WEP has many holes and is easily
cracked. 128
-
bit keys impact performance slig
htly without a significant
increase in security so 40
-
bit (or 64
-
bit on some equipment)
encryption is just as well. As with all security measures there are ways
around it, but by using encryption you will keep the casual hackers out
of your systems. If pos
sible, you should use WPA encryption (most
older equipment can be upgraded to be WPA compatible). WPA fixes
the security flaws in WEP but it is still subject to DOS (denial
-
of
-
service) attacks.


4.

Restrict Unnecessary Traffic:

Many wired and wireless router
s have
built
-
in firewalls. They are not the most technically advanced firewalls,
but they help create one more line of defense. Read the manual for
your hardware and learn how to configure your router to only allow
incoming or outgoing traffic that you hav
e approved.


5.

Change the Default Administrator Password:

This is just good
practice for ALL hardware and software. The default passwords are

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easily obtained and because so many people don’t bother to take the
simple step of changing them they are usually w
hat hackers try first.
Make sure you change the default password on your wireless router /
access point to something that is not easily guessed like your last
name.


6.

Patch and Protect Your PC’s:

As a last line of defense you should
have personal firewall
software such as Zone Alarm Pro and anti
-
virus
software installed on your computer. As important as installing the
anti
-
virus software, you must keep it up to date. New viruses are
discovered daily and anti
-
virus software vendors generally release
updates
at least once a week. You also must keep up to date with
patches for known security vulnerabilities. For Microsoft operating
systems you can use Windows Update to try and help keep you current
with patches.


Conclusion


In this article I have explained th
at unless some basic security precautions
are taken, a wireless network is very susceptible to intrusion. A hacker can
use an insecure wireless network to spy on someone, steal files off from hard
drive, plant files onto hard drive, or even to steal Intern
et access. I then
went on to discuss several security mechanisms that can be implemented to
help secure the home network.