This ppt includes what is wireless hacking, types of wi-fi eg,wep,wpa,wpa/psk and terms related to it .this also conclude how to crack the wireless hacking ,the tools and commands required for it. this is very usefull . catch it..... :)

1. WIRELESS HACKING

2.  INTRODUCTION
 WHY?
 HOW?
 PREVENTION

3.  Wireless networking technology is becoming
increasingly popular but at the same time has
introduced many security issues.
 The popularity in wireless technology is driven by
two primary factors - convenience and cost.
 It works on standard IEEE 802.11 group.

4.  Service Set Identification
 Your router broadcasts the name of your network(SSID)
and allows others to connect wirelessly to your network.
 This feature can also b disabled.
 If you choose to disable your SSID broadcasting you will
need to setup a profile in your wireless n/w management
s/w on your wireless clients using SSID you have
chosen..

5.  802.11a
Frequency - 2.4000 GHz to 2.2835GHz
 802.11b
Frequency - 5.15-5.35GHz to 5.725-5.825GHz
 802.11g
Frequency - 2.4GHz

6.  2.4 Ghz wifi spectrum
 5 Ghz wifi spectrum

7.  WEP
 WPA
 WPA/PSK

8.  Abbreviation for Wired Equivalent Privacy.
 IEEE chose to employ encryption at the data link
layer according to RC4 encryption algorithm.
 Breakable even when configured correctly…
 Can b broken in as small as 3 min..

9.  Stands for Wi-Fi Protected Access.
 Hashing algorithm is used in WPA.
 Created to provide stronger security than WEP.
 Still able to be cracked if a short password is
used.

10.  If a long password is used, these protocol
are virtually uncrackable.
 Even with good passwords , unless you
really know what your doing, wireless
networks can be hacked…

11.  Strongest now-a-days.
 Theoretically un-breakable.
 But yet is somehow possible to crack it…

12.  When a user uses wireless internet they generate
data called “packets”.
 Packets are transmitted between the transmitting
medium and the wireless access point via radio
waves whenever the device is connected with the
access point.

13.  Depending on how long the device is connected, it
can generate a certain number of packets per day.
 The more users that are connected to one access
point, the more packets are generated.

14. HOW TO CRACK??

15. And this is
my
“FAKE
AP”
I am
“CLIENT”
Hi! I am
“HACKER”
Send “DEAUTH” packet
to attack the client
Client associates
to the FAKE AP.
YES!!!

16.  You must locate the wireless signal
 This can be done by using your default Windows
tool “View Available Wireless Network”
 More useful tools include NetStumbler and
Kismet. Kismet has an advantage over the other
because it can pick up wireless signals that are
not broadcasting their SSID.

17.  Once you located a wireless network you can
connect to it unless it is using authentication or
encryption.
 If it is using authentication or encryption then the
next step would be to use a tool for sniffing out
and cracking WEP keys.

18.  Once any of the tools has recovered enough
packets it will then go to work on reading the
captured information gathered from the packets
and crack the key giving you access.
 Other tools (such as CowPatty) can use dictionary
files to crack hard WPA keys.

19.  Kismet : War-driving with passive mode scanning
and sniffing 802.11a/b/g, site survey tools
 Airfart : Wireless Scanning and monitoring
 BackTrack: Linux Base Os to crack WEP
 Airjack : MITM Attack and DoS too
 WEPCrack : Cracking WEP

20. Find Router MAC
Change Your MAC
Find User’s MAC
Change MAC
according To User’s
MAC

21.  Using Following command we can get password
of WEP network
• ifconfig
• iwconfig
• macchanger
• airmon-ng
• airdump-ng
• airreplay-ng
• aircrack-ng

22. ifconfig – interface configuration tool similar but more
powerful than ipconfig
iwconfig – interface wireless configuration tool
macchanger – allows you to change the mac address of the
card (Spoofing)
airmon-ng – puts the card into monitor mode (promiscuous
mode) allows the card to capture packets
airdump-ng – capturing and collecting packets
aireplay-ng – used to deauthenticate and generate traffic
aircrack-ng – used to crack WEP and WPA

23.  This case study presents an overview of wireless
setups identified between November 22 2010 and
October 3 2011. The study covers 2,133 wireless
networks of both consumer and corporate
customers.

26.  Don’t broadcast your SSID . This is usually
done during the setup of your wireless router.
 Change the default router login to something
else.
 If your equipment supports it, use WPA or
WPA/PSK because it offers better encryption
which is still able to be broken but much harder.
 Always check for updates to your router.
 Turn off your router or access point when not
using it.

27.  There is no such thing as 100% percent security
when using wireless networks but at least with
these few simple steps you can make it harder for
the average person to break into your network.