Wi-FiWi-Fi&&

Wi-Fi SecurityWi-Fi Security

AgendaAgenda :-:-

What is wifi?What is wifi? Wifi modesWifi modes Features of wifi technologyFeatures of wifi technology Wifi limitationsWifi limitations Wifi terminologiesWifi terminologies How to improve wifi rangeHow to improve wifi range Wifi productsWifi products Wifi securityWifi security

What is wifi?What is wifi?

““Wireless fiderlity” Wireless fiderlity” popularly known as popularly known as wifi,developed on IEEE wifi,developed on IEEE 802.11 standards.802.11 standards.

Wifi provides wireless Wifi provides wireless access to applications & access to applications & data acrossradio network.data acrossradio network.

It uses radio networks to It uses radio networks to transmit data b/w userstransmit data b/w users

Wifi is quicker than the Wifi is quicker than the conventional modem over a conventional modem over a large networklarge network

-:Wi fi software tools:--:Wi fi software tools:-

For windows For windows usersusers

NETSTUMBLERNETSTUMBLER OMNIPEEKOMNIPEEK WIFI HOPPPERWIFI HOPPPER AP TOOLSAP TOOLS

For unix usersFor unix users AircrackAircrack Aircrack ptwAircrack ptw AirsnortAirsnort cowpattycowpatty

For mac usersFor mac users KismacKismac Mac stumblerMac stumbler

-:WI FI MODES:--:WI FI MODES:- INFRASTRUCTURE MODEINFRASTRUCTURE MODE Wireless access points are Wireless access points are

required for this moderequired for this mode SSID is security key SSID is security key

prevent unauthorised prevent unauthorised access to WLANaccess to WLAN

AdvantagesAdvantages:-provide :-provide much more much more security,scalability,ease of security,scalability,ease of management,improved management,improved securitysecurity

AD HOC MODEAD HOC MODE LimitationLimitation:-:- Disconnection of random Disconnection of random

devicesdevices Cannot bridge to wire Cannot bridge to wire

LAN’sLAN’s AdvantagesAdvantages:-:- Works fine in small Works fine in small

environment like buildingsenvironment like buildings No extra hardware(ACCESS No extra hardware(ACCESS

POINT) is requiredPOINT) is required

-:Features of Wi Fi technology-:Features of Wi Fi technology

A new aspect in networkingA new aspect in networking Unmatched mobility and elasticityUnmatched mobility and elasticity Fortress technologyFortress technology Support an entire age bracketSupport an entire age bracket Its convenient and every whereIts convenient and every where More faster and secureMore faster and secure Wi fi with no limitationWi fi with no limitation

-:WI FI LIMITATIONS:-

• Security concerns

• Interference from other devices

• Lacking high quality media streaming

-:Wi Fi terminologies-:Wi Fi terminologies

Giga hertz:- Giga hertz:-

The most popular wifi technology The most popular wifi technology such as 802.11b operates on the range of such as 802.11b operates on the range of 2.40GHz to 2.4835GHz & 802.11a at 2.40GHz to 2.4835GHz & 802.11a at 5.725GHz to 5.850GHZ5.725GHz to 5.850GHZ

WibroWibro HotspotHotspot Wifi finderWifi finder Access pointAccess point

• ACCESS POINT• HOTSPOT

-:How to improve Wi Fi range:-

• Mountaining ROUTER on centre of premises can improve performance

• Router with multiple input and multiple output(MIMO)

• Wi Fi range improver device is shown beside

-:WI FI PRODUCTS:-

• Desktop wireless Wi Fi cards

• Laptop/Notebook Wireless Wi Fi cards

• Wireless Wi Fi router

• Wireless Wi Fi USB adapter

• Handhelds and PDA’s

:- :- Wi Fi SecurityWi Fi Security

Wi fi security protects your network Wi fi security protects your network and gets quick access associated and gets quick access associated with Win2k,XPwith Win2k,XP

Wi Fi security examines data and Wi Fi security examines data and perceives entrance point in real time perceives entrance point in real time and identifies the user who wants to and identifies the user who wants to spoil your files.spoil your files.

Wi Fi provides various security tools. Wi Fi provides various security tools.

How to protect your computer How to protect your computer from WPA hackfrom WPA hack

STEP 1:-just log into your router.STEP 1:-just log into your router.

STEP 2:-switch off Temporal Key STEP 2:-switch off Temporal Key Integrity Protocol(TKIP) as encryption Integrity Protocol(TKIP) as encryption mode.mode.

STEP 3:-Use advanced Encryption STEP 3:-Use advanced Encryption System(AES) only.System(AES) only.

Paints to Block Wi Fi signalsPaints to Block Wi Fi signals

The paints contain an aluminium iron The paints contain an aluminium iron oxide which resonates as the same oxide which resonates as the same frequency as Wi Fifrequency as Wi Fi

By coating an entire room ,signals By coating an entire room ,signals can’t get in & can’t go out.can’t get in & can’t go out.

It is developed at university of Tokyo.It is developed at university of Tokyo.

THANK YOU