Blogs

Last modified: January 30, 2014
  • Standardizing the Severity of Security Vulnerabilities

    Larissa Shapiro, ISC Product Manager ISC has recently become aware of a security advisory, CVE-2010-3762 filed against BIND 9 on October 5th 2010. ISC did not request this CVE, nor was it contacted by the submitter prior to its submission. We believe the reported severity assessment of this CVE to be higher than is realistic. Specifically, because a recursive operator

    Read more
    0
  • F-Root Routing: How does it work?

    ISC uses an unusual routing configuration for the F-Root name server. While the configuration is relatively easy to understand, it’s hard to deduce by looking at the routing tables. We’ll explain it here! The network 192.5.4.0/23 is used for F-Root. The reasons for using this block are historical and unimportant, but the fact that it is a /23 is very

    Read more
    0
  • Taking Back the DNS

    Most new domain names are malicious. I am stunned by the simplicity and truth of that observation. Every day lots of new names are added to the global DNS, and most of them belong to scammers, spammers, e-criminals, and speculators. The DNS industry has a lot of highly capable and competitive registrars and registries who have made it possible to

    Read more
    0
  • Using the root DNSSEC key in BIND 9 resolvers

    To use the signed root zone in DNSSEC validation in your BIND 9 resolvers, you must be running BIND 9.6.2 or higher. Earlier versions do not support the required algorithms to enable validation using the root zone’s key. It is strongly recommended you run BIND 9.7 to use the automatic key updating functionality. The recommended procedure to use differs for

    Read more
    0
  • What’s happening with DLV?

    Now that the root zone has been officially signed, what happens with ISC’s DNSSEC Look-aside Validation Registry? The short answer is, it gets smaller, but does not go away, at least not today. While having the root signed is a critically important step in the DNSSEC deployment effort, it is not the final step. It’s the one that enables a

    Read more
    0