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802.11 Security (Again, Sorry). Darrin Miller [email protected] Agenda. Today Tomorrow Public WLANs Private WLANs Future. Today. Proprietary Implementations  Variety of implementations that thwart the large threats to 802.11 Wireless LANs (WLANs) WiFi Protected Access (WPA)

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802 11 security again sorry

802.11 Security (Again, Sorry)

Darrin Miller

[email protected]


Agenda
Agenda

Today

Tomorrow

Public WLANs

Private WLANs

Future


Today
Today

Proprietary Implementations 

Variety of implementations that thwart the large threats to 802.11 Wireless LANs (WLANs)

WiFi Protected Access (WPA)

Imminent, and again mitigates the large threats to 802.11 WLANs

Tunneling overlays (SSL, SSH, IPsec)


Tomorrow 802 11 task group i tgi
Tomorrow - 802.11 – Task Group i (TGi)

  • Pros

    • Stronger Encryption (AES)

    • More complete features and mitigation of threats

      • authenticated management frames

      • Secure ad-hoc networking

      • Secure roaming

  • Challenges

    • Must evaluate the entire system for security

    • Relies on other entities for security (IETF)

    • How soon will TGi be finished and how soon will vendors produce interoperable products

    • EAP acronym soup (EAP-TLS, PEAP, EAP-TTLS)


Public wlans
Public WLANs

  • Today

    • Authentication Mandatory

    • Typically No Confidentiality

    • Limited Roaming

    • Dedicated Access Points

  • Tomorrow

    • Legacy Device Support

    • Roaming Mandatory

    • Fraud Protection

    • Confidentiality Desired

    • Shared Use Access Points


Private wlans
Private WLANs

  • Today

    • Authentication Mandatory

    • Confidentiality Mandatory

    • Legacy Device Support

  • Tomorrow

    • QOS Support Mandatory (VoIP)

    • Secure Roaming Mandatory

    • Legacy Device Support

    • Easier Deployment

    • Easier Management


Future devices in motion
Future - Devices in Motion

  • Handoff of service between WLAN and Wireless WAN

    • Authentication assurance

    • Confidentiality assurance

    • Consistency across standards bodies (?)

  • Public Services Based Network

    • Corporate Application Access

  • User Based Public Service

    • Personal Use

  • User Based Private to Public Service

    • How do we consistently authenticate the user to the both services

    • Corporate Security Policy compliance. Is it OK to be connected to two networks at once. Will the end user or corporation even know?



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