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DNS and DNSSec. Eustace Asanghanwa Andrew Bates Shane Jahnke Brian Wilke. Introduction. Standard DNS Security Concerns DNSSEC Management Implications Impact to Embedded Systems Conclusions. Standard DNS. Security Concerns. UDP Query ID only 16 bits Small search space

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DNS and DNSSec

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Dns and dnssec l.jpg

DNS and DNSSec

Eustace Asanghanwa

Andrew Bates

Shane Jahnke

Brian Wilke


Introduction l.jpg

Introduction

  • Standard DNS

  • Security Concerns

  • DNSSEC

  • Management Implications

  • Impact to Embedded Systems

  • Conclusions


Standard dns l.jpg

Standard DNS


Security concerns l.jpg

Security Concerns

  • UDP

  • Query ID only 16 bits

    • Small search space

  • Well known ports


Dnssec l.jpg

DNSSEC

  • Public Key Infrastructure, e.g. SSL

  • Chain of Authority

  • Validation of DNS records


Management implications l.jpg

Management Implications

  • Who manages keys?

    • Root keys

    • Key rotation

    • Clock synchronization

  • Requires wide spread adoption

  • Few production implementations


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Impact to Embedded Systems

  • Embedding Challenges

    • Limited memory & storage

    • Limited CPU resources

    • Limited power

    • Expensive secure storage

  • Linux and BIND9 installed, and DNS configured. Currently configuring for DNSSEC


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Conclusions

  • DNS has security concerns

  • DNSSEC offers solutions

  • Solutions introduce new problems


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