Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 27, NO. 3, APRIL 2009 275 Impact of Configuration Errors on DNS Robustness
 

Summary: IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 27, NO. 3, APRIL 2009 275
Impact of Configuration Errors on DNS Robustness
Vasileios Pappas, Duane Wessels, Daniel Massey, Songwu Lu, Andreas Terzis, and Lixia Zhang
Abstract--During the past twenty years the Domain Name
System (DNS) has sustained phenomenal growth while main-
taining satisfactory user-level performance. However, the original
design focused mainly on system robustness against physical
failures, and neglected the impact of operational errors such
as misconfigurations. Our measurement efforts have revealed a
number of misconfigurations in DNS today: delegation inconsis-
tency, lame delegation, diminished server redundancy, and cyclic
zone dependency. Zones with configuration errors suffer from
reduced availability and increased query delays up to an order
of magnitude. The original DNS design assumed that redundant
DNS servers fail independently, but our measurements show
that operational choices create dependencies between servers.
We found that, left unchecked, DNS configuration errors are
widespread. Specifically, lame delegation affects 15% of the
measured DNS zones, delegation inconsistency appears in 21% of
the zones, diminished server redundancy is even more prevalent,

  

Source: Amir, Yair - Department of Computer Science, Johns Hopkins University

 

Collections: Computer Technologies and Information Sciences