Wireless networking technology is
becoming increasingly popular but at the
same time has introduced many security
The popularity in wireless technology is
driven by two primary factors convenience and cost.
It works on standard IEEE 802.11 group.
Service Set Identification
Your router broadcasts the name of ur
n/w (SSID) n allows others to connect
wirelessly to ur n/w.
This feature can also b disabled.
If u choose to disable ur SSID
broadcasting u ll need to setup a profile
in ur wless n/w mgmt s/w on ur wless
clients using SSID u „ve chosen..
Wireless LAN standards of IEEE's
Frequency - 2.4000 GHz to 2.2835GHz
Frequency - 5.15-5.35GHz to 5.725-5.825GHz
Frequency - 2.4GHz
Wireless uses Radio Frequency
2.4 Ghz wifi spectrum
5 Ghz wifi spectrum
Abbreviation for Wired Equivalent Privacy.
IEEE chose to employ encryption at the
data link layer according to RC4
Breakable even when configured
Can b broken in as small as 3 min..
Stands for Wi-Fi Protected Access.
Hashing algorithm is used in WPA.
md4 for WPA I
md5 for WPA II
md6 for WPA III
Created to provide stronger security
Still able to be cracked if a short
password is used.
If a long passphrase or password is
used, these protocol are virtually
Even with good passwords or phrases,
unless you really know what your doing,
wireless networks can be hacked…
But yet is somehow possible to crack
A little info…
When a user uses wireless internet they
generate what are called data “packets”.
Packets are transmitted between the
transmitting medium and the wireless
access point via radio waves whenever
the device is connected with the access
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
You must locate the wireless signal
This can be done by using your default
Windows tool “View Available Wireless
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.
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.
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.
Tools For WEP Hacking
Kismet : War-driving with passive mode
scanning and sniffing 802.11a/b/g, site survey
Airfart : Wireless Scanning and
BackTrack: Linux Base Os to crack WEP
: MITM Attack and DoS too
WEPCrack : Cracking WEP
Hacking Through Router’s MAC
Find Router MAC
Change Your MAC
Find User‟s MAC
according To User‟s
Using Following command we can get
password of WEP network
Description of Commands
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
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
Prevent Your Network from Getting
Don‟t broadcast your SSID . This is usually
done during the setup of your wireless router.
Change the default router login to something
If your equipment supports it, use WPA or
WPA/PSK because it offers better encryption
which is still able to be broken but much
Always check for updates to your router.
Turn off your router or access point when not
Prevent Your Network from Getting
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.
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