MUJAHID RANA

Bs IT 6th semester

Roll No 1173008

Presentation Topic : wireless security

TOPICS

Introduction to wireless

Wireless security

Issues

WEP security (Wired Equivalent Privacy)

WAP security (Wi-Fi Protected Access)

How we secure the home wireless network

I N T R O D U C T I O N T O W I R L E S S N E T W O R K S

Wireless networks are computer networks that are not connected

by cables

Medium is Air

Less Cost

Wireless devices work in Bluetooth, printer LAN, MAN, WAN

No need dial up phone , space , wire

WIRELESS SECURITY

Wireless technology has become very popular in recent years,

The convenience of wireless networks has changed how people use computers,

TV's and video games, but it has also created new security concerns and challenges.

Wireless radio frequency signals broadcast through the open air, making your

network visible to anyone using a wireless capable device within range. Without

security on your network, it is open to anyone who can "see" your network.

If someone you don't know is using your connection, they could be using it to

download content that is illegal (such as music or movies).

SECURITY ISSUES

End user are not security experts, and may not be aware of the risks

posed by wireless LANs

Nearly all of the access points running with default configuration have

not activated WEP

Most of the users does not change access points' default key used by

all the vendor’s products Like user (admin) pasw (admin)

The Wireless Access Points who are enable with WEP can be cracked

easily

WEP SECURITY

Wired Equivalent Privacy (or Wireless Encryption Protocol), WEP is part of the

IEEE 802.11 wireless

WEP is used at the two lowest layers of the OSI model - the data link and

physical layers; it therefore does not offer end-to-end security.

WEP's major weakness is its use of static encryption keys

When you set up a router with a WEP encryption key, that one key is used by

every device on your network to encrypt every packet that's transmitted

Do not secure as a long time easily crack wep security

allow to create 4 static keys

WPA SECURITY

Improved data encryption through the temporal key integrity protocol (TKIP).

TKIP scrambles the keys using a hashing algorithm and, by adding an integrity-

checking feature, ensures that the keys haven't been tampered

WPA major advantage is its use of dynamic encryption keys

If a device is not configured for WPA, it will usually fall back to the lesser WEP

encryption scheme

User authentication, which is generally missing in WEP, through the extensible

authentication protocol (EAP). WEP regulates access to a wireless network based

on a computer's hardware-specific MAC address

HOW WE SECURE THE

HOME WIRELESS NETWORK

Select the wireless security method of either WEP or WPA (we

suggest WPA

Enter the passphrase to generate the keys. After enabling security

on the router, any wireless device that wants to connect must have the

key in order to connect to your network.

CHANGE DEFAULT ROUTER

PASSWORD

Make sure the router password is not still set to the default

password.

If the password can be guessed this could give someone access to

the router setup, which could allow them to change your router

settings, including viewing any security keys.

The most of the device user and password is admin

D I S A B L E S S I D B R OA D C A S T

To help make finding your wireless network easier wireless

routers broadcast your SSID, which means anyone looking for a

wireless router could see your SSID.

To help make it more difficult for someone to find your network when

browsing for a wireless network you can disable the

SSID broadcast feature. However, when disabling the SSID broadcast

it will require that you manually enter your unique SSID when wanting

to connect any new device to your network.

E N A B L E W I R E L E S S M A C F I LT E R

The Wireless MAC filter feature only allows a wireless device to

connect to your router if the MAC Address has been entered into

the filter list.

This can make connecting new devices to your network more

difficult, but improves the overall security of your wireless

network.

CHANGE THE SSID NAME

AND PASSWORD

Change the SSID (Service Set Identifier ) Name Because it

Uniquely identify the Network

Like PTCL devices all the devices default name is PTCL-PP

Change the default key which help to protect your network I am

prefer to also make time

The default password 12345678