CCNA 2 - Capitulo 12.5.1

CCNA 2 - Capitulo 12.5.1

1. WLAN CONCEPTS

   • WLAN THREATS
     • WLAN SUSCEPTIBLE TO SEVERAL THREATS
       • INTERCEPTION OF DATA
         • WIRELES DATA SHOULD BE ENCRYPTED TO PREVENT
           • BEING READ BY EAVESDROPPERS
       • WIRELESS INTRUDERS
         • EFFECTIVE AUTHENTICATION TECHNIQUES
       • DENIAL OF SERVICE
         • ACCIDENTALLY OR MALICIOUSLY
         • THE RESULT OF
           • IMPROPERLY CONFIGURED DEVICES
           • A MALICIUOUS USER INTENTIONALLY INTERFERING WITH WIRELESS COMMUNICATION
           • ACCIDENTAL INTERFERENCE
             • MICROWARE , CORDLESS PHONE
             • 2,4 GHZ
               • IS MORE PRONE TO INTERFERENCE THAN 5GHZ
         • MINIMIZE THE RISK OF DoS ATTACK ?
           • HARDER ALL DEVICES
           • KEEP PASSWORDS SECURE
           • CREATE BACKUPS
           • ENSURE CONFIGURATION ARE INCORPORATED OFF HOURS
       • ROUGUE APS
         • WIRELESS ROUTER CONNECTED COPORATE NETWORK
           • WITHOUT AUTHORIZATION
           • MALICIOUS
           • DON'T MALICIOUS
         • DETECTED USING MANAGEMENT SOFTWARE
         • OR PERSONAL NETWORK HOTSPOT COULD ALSO BE USED AS ROUGE AP
           • EX : USER WITH SECURE NETWORK ACCESS ENABLE WINDOWS HOST TO BECOM A WIFI AP
       • WLAN IS OPEN TO ANYONE WITHIN RANGE OF AN AP AND APPRORIATE CREDENTIALS THEREFORE , ATTACKER WITH A WIRELESS NIC AND KNOWLEDGE OF CRACKING TECHIQUES
         • YOU CAN GET ACCESS TO A WLAN
       • MAN IN THE MIDDLE ATTACK
         • WHATS IS WORK ?
           • HACKER IS POSITIONED IN BETWEEN TWO LEGITIME ENTITITES
             • READ OR MODIFY THE DATA PASSES
         • THERE MAYS TO CREATE MITM ATTACK ?
           • 1 ) EVIL TWIN AP ATTACK
             • FREE WIFI , AIRPORTS , CAFE AND RESTAURANTS ARE POPULAR SPOTS
             • WHATS IS WORK ?
               • 1.ATTACKER INTRODUCES A ROUGUE AP THE SAME SSID AS A LEGITIMATE
               • 2. ATTACKER CONFIGURE ROUGUE WITH STRONGER SIGNAL
               • 3.USER TRAFFIC SENT TO THE ROGUE AP ; ROGUE AP FORWARDS TRAFFIC TO LEGITIMATE AP ; RETURN TRAFFIC CAPTURED AND RELAYED
   • CHANNEL MANAGEMENT
     • PLAN A WLAN DEPLOYMENT
       • ADDITIONAL RECOMMENDATIONS
         • USE WIRING EXISTING
           • NOTE LOCATIONS ON THE MAP
         • POSITION APS
           • ABOUVE OBSTRUCTIONS
           • VERTICALLY
             • NEAR THE CEILLING
             • IN THE CENTER OF EACH COVERAGE AREA
           • IN LOCATIONS WHERE USER ARE EXPECTED TO BE
             • EX : CONFERENCE ROOM THAN A HALLWAY
           • VERIFY LOCATIONS WHERE AP CANNOT BE PLACED
         • NOTE ALL POTENTIAL SOURCE OF INTERFERENCE WHICH CAN
           • MICROWARE OVENS
           • WIRELESS VIDEO CAMERAS
           • FLUORECENT LIGHTS
           • MOTION DETECTORS
           • ANY DEVICE USES THE 2,4 GHZ RANGE
       • WLAN DEPENDS
         • GEOGRAPHICAL LAYOUT
         • NUMBER OF BODIES AND DEVICES
         • DATA RATES USER EXPECTS
         • TRANSMIT POWER SETTINGS
         • NON OVERLAPPING CHANNELS
         • CIRCULAR COVERAGE AREA IS IMPORTANT