ITN 220 Wireless Security

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ITN 220 Wireless Security

• RFC's and Standards

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ITN 220 Wireless Security

• RFCs (Requests For Comment) are a set of
  documents which encompass new research,
  innovations, and methodologies applicable to
  Internet Technologies. Sometimes adopted by the
  IETF as an Internet standard.
• Internet Standards are specifications that have
  been ratified (formally accepted) as open
  standards after extensive peer review.

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ITN 220 Wireless Security

• Institute of Electrical and Electronics Engineers
  a non-profit association of professional
  engineers whose formal purpose is the advancement
  of the theory and practice of electrical,
  electronics, communications, computer engineering
  and computer science. It is a leading developer
  of industrial standards in various fields,
  including medical, construction, transportation,
  information assurance and networking.

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ITN 220 Wireless Security

• Examples
• RFC
• LDAP (RFC 4511)
• Internet Standard
• SMTP (STD 10, RFC 821)
• IEEE Standard
• The 802 suite of standards

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ITN 220 Wireless Security

• Other Organizations
• Wi-Fi Alliance
• FIPS (gov't use)
• NIAP (gov't use)
• JITC (gov't use)
• United Laboratories
• etc.

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ITN 220 Wireless Security

• IEEE 802.11 (Wireless Local Area Networks)
• original release
• 1997
• 1 and 2 Mbs via IR or Frequency Hopping
  /Direct-Sequence Spread Spectrum radio at 2.4 Ghz
• Used Carrier Sense Multiple Access with Collision
  Avoidance (CSMA/CA listen first, then talk/if
  collision, wait random)(also uses RTS/CTS
  requests)
• Developed into a suite of amendments (incorrectly
  called standards) to the 802 standard as
  improvements were made

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ITN 220 Wireless Security

• 802.11a (1999) 54 Mbs in the 5 GHz band 12
  non-overlapping channels (8 for indoor, 4 for
  PTP)(not very good without LOS)
• 802.11b (1999) 11 Mbs in the 2.4 GHz band 3
  non-overlapping channels
• 802.11g (2003) 54 Mbs in the 2.4 GHz band 3
  non-overlapping channels
• 802.11n (April 2008) 540 Mbs in the 2.4 GHz
  or 5 GHz bands uses MIMO to improve bandwidth
  and distance

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ITN 220 Wireless Security

• 802.11c Access Point Bridging, supplement to
• 802.11d Country to country roaming
• 802.11e Enhancements, QoS
• 802.11f Inter-AP protocol (removed 2006)
• 802.11h European compatibility for 802.11a
• 802.11i Enhanced security (WPA2)
• 802.11j Extensions for Japan

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ITN 220 Wireless Security

• 802.11k Measurement enhancements
• 802.11m pending (odds and ends)
• 802.11n Higher throughput via MIMO
• 802.11p Improvements for use in vehicles
• 802.11r Fast Roaming
• 802.11s Mesh
• 802.11T Performance Prediction

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ITN 220 Wireless Security

• 802.11u Internetworking with non-802 nets
• 802.11v Wireless network management
• 802.11w Protected Management Frames
• 802.11y Proposed 3.6 GHz band
• Not used 802.11l, 802.11o, 802.11q, 802.11x

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ITN 220 Wireless Security

• Other
• 802.15 - WPAN
• 802.15.1 - Bluetooth
• 802.15.2 Coexistance between 802.11 and 802.15
• 802.15.3 High data rate WPAN
• 802.15.3a Alternate PHY for multimedia
• 802.15.3b Improved interoperability
• 802.15.4 Low data rate/low power (ZigBee)
• 802.16 - WMAN
• 802.20 - MBWA

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ITN 220 Wireless Security

• Other
• Non-standard use
• Video bridges
• Alarms
• Microwave Ovens
• Cordless Telephones
• Wireless Cameras
• Intercoms
• and so on

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ITN 220 Wireless Security

• Questions?