[AfrICANN-discuss] DNS Survey Results Pandora's Box of Both
Frightening and Hopeful Results, Says Cricket Liu
annerachel at gmail.com
Tue Nov 17 20:18:38 SAST 2009
DNS Survey Results Pandora's Box of Both Frightening and Hopeful Results,
Says Cricket Liu<http://www.circleid.com/posts/dns_survey_results_pandora_box_of_both_frightening_and_hopeful_results/>
- Nov 16, 2009 3:23 PM PST
- Comments: 0<http://www.circleid.com/posts/print/dns_survey_results_pandora_box_of_both_frightening_and_hopeful_results/#comments>
- Views: 303
By *CircleID Reporter* <http://www.circleid.com/members/501/>
The fifth-annual survey of domain name servers (DNS) on the public
Internet—called a "Pandora's box of both frightening and hopeful
results"—was released today by The Measurement
partnership with Infoblox. Cricket Liu, Vice President of Architecture at
Infoblox and author of O'Reilly & Associates' DNS and BIND, DNS & BIND
Cookbook says: "Of particular interest is the enormous growth in the number
of Internet-connected name servers, largely attributable to the introduction
by carriers of customer premises equipment (CPE) with embedded DNS
functionality. This equipment represents a significant risk to the rest of
the Internet, as without proper access controls, it facilitates enormous
Following are the key 2009 DNS survey results from the survey—along with
positive, negative, or neutral "consequence" ratings—based on a sample that
included 5 percent of the IPv4 address space, nearly 80 million addresses.
- *NEUTRAL: There are an estimated 16.3 million name servers on the
Internet;* this represents a 40% increase in 2 years likely due to an
explosion in the population of "non-traditional", proxy DNS servers embedded
in broadband access devices or customer premises equipment (CPE).
- *VERY DISTURBING: 79.6% of the name servers are open to recursion;* this
represents a 27% increase in the last 2 years, likely related to the
increase in proxy DNS servers in CPE. Unfortunately, all these name servers
can be used maliciously to execute DDOS attacks, posing a significant threat
to the Internet.
- *POSITIVE: Percentage of Microsoft DNS Servers is now almost negligible
at .37%; *this is likely due to greater awareness of the risks of
exposing Windows computers to the Internet.
- *POSITIVE: Percentage of zones with one or more name servers open to
zone transfers decreased to 16% from 31%* (in 2008); administrators are
paying closer attention to configuration of external DNS servers, realizing
that they need to configure ACLs to prevent zone transfers, which can leave
them open to DOS attacks.
- *POSITIVE: The number of DNSSEC signed zones increased significantly—by
approximately 300%; *this indicates that momentum in DNSSEC adoption is
increasing. This could be the result of greater awareness and adoption due
to the Kaminsky vulnerability last year and support for DNSSEC signed in
parent zones (.org).
*Related Links:* Executive
, Press Release <http://www.infoblox.com/news/release.cfm?ID=149>
*Related topics:* DNS <http://www.circleid.com/topics/dns>,
, Security <http://www.circleid.com/topics/security>
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the AfrICANN