DNS Security

DNS Security / Most Viewed

The Christmas Goat and IPv6 (Year 4)

This year, 2013, I got 24 days of IPv6 and DNSSEC measurements. All in all it created 15GB logs with more than 62 million rows. On the 21st of December, early in the morning, the goat was "traditionally" burnt down, however this year with one exception. Via the Swedish newspaper Expressen the arsonists anonymously took the blame and also filmed their own act. more

DNSSEC and DNS over TLS

The APNIC Blog has recently published a very interesting article by Willem Toorop of NLnet Labs on the relationship between Security Extensions for the DNS (DNSSEC) and DNS over Transport Layer Security. Willem is probably being deliberately provocative in claiming that "DoT could realistically become a viable replacement for DNSSEC." If provoking a reaction was indeed Willem's intention, then he has succeeded for me, as it has prompted this reaction. more

Takeaways from the DNS-OARC’s 28th Workshop

March has seen the first of the DNS Operations, Analysis, and Research Center (OARC) workshops for the year, where two days of too much DNS is just not enough! These workshops are concentrated within two days of presentations and discussions that focus exclusively on the current state of the DNS. Here are my impressions of the meeting. more

DNS Tunneling: Is It a Security Threat?

DNS tunneling -- the ability to encode the data of other programs or protocols in DNS queries and responses -- has been a concern since the late 1990s. If you don't follow DNS closely, however, DNS tunneling likely isn't an issue you would be familiar with. Originally, DNS tunneling was designed simply to bypass the captive portals of Wi-Fi providers, but as with many things on the Web it can be used for nefarious purposes. For many organizations, tunneling isn't even a known suspect and therefore a significant security risk. more

Counter-eCrime Operations Summit (APWG) In Prague Next Week

The sixth annual Counter-eCrime Operations Summit (CeCOS VI) will engage questions of operational challenges and the development of common resources for the first responders and forensic professionals who protect consumers and enterprises from the ecrime threat every day. This year's meeting will focus on the shifting nature of cybercrime and the attendant challenges of managing that dynamic threatscape. more

BIND 9 Users Should Upgrade to Most Recent Version to Avoid Remote Exploit

A remote exploit in the BIND 9 DNS software could allow hackers to trigger excessive memory use, significantly impacting the performance of DNS and other services running on the same server. A flaw was recently discovered in the regular expression implementation used by the libdns library, which is part of the BIND package. The flaw enables a remote user to cause the 'named' process to consume excessive amounts of memory, eventually crashing the process and tying up server resources to the point at which the server becomes unresponsive. more

Is This Only Sloppy Wording by ICANN?

So I wrote earlier that I though it was good stuff when ICANN released a paper on DNS Security. Yes, I think it was good this paper was released, and yes it points out correctly how important DNSSEC is. But, now when reading it in detail, I find two things that troubles me. And it has to do with management of .ARPA. A top level domain that is used for infrastructural purposes. Like IP-addresses and E.164 numbers... more

Internet Groups Inaugurate First of Three Cyber Security Facilities

ICANN and internet exchange firm Packet Clearing House (PCH) have joined forces with Infocomm Development Authority of Singapore (IDA) and the National University of Singapore (NUS) to launch the first of three facilities designed to boost the adoption of Domain Name System Security (DNSSEC) among country code Top-Level Domains (ccTLDs). The three new facilities, located in Singapore; Zurich, Switzerland (still under construction) and San Jose, California, provide cryptographic security using the recently deployed DNSSEC protocol. more

An Astonishing Collaboration

Wow. It's out. It's finally, finally out... So there's a bug in DNS, the name-to-address mapping system at the core of most Internet services. DNS goes bad, every website goes bad, and every email goes...somewhere. Not where it was supposed to... I'm pretty proud of what we accomplished here. We got Windows. We got Cisco IOS. We got Nominum. We got BIND 9, and when we couldn't get BIND 8, we got Yahoo, the biggest BIND 8 deployment we knew of, to publicly commit to abandoning it entirely. It was a good day... more

ICANN Makes Urgent Call for Full Deployment of Domain Name System Security Extensions (DNSSEC)

In light of increasing reports of malicious activity targeting the DNS infrastructure, ICANN is calling for the full deployment of the Domain Name System Security Extensions (DNSSEC) across all unsecured domain names. more

Internet Infrastructure: Stability at the Core, Innovation at the Edge (Part 2 of 5)

For nearly all communications on today's Internet, domain names play a crucial role in providing stable navigation anchors for accessing information in a predictable and safe manner, irrespective of where you're located or the type of device or network connection you're using. Over the past 15 years hundreds of millions of domain names have been added to the Internet's Domain Name System (DNS), and well over two billion (that's Billion!) new users, some ~34 percent of the global population, have become connected. more

ICANN Releases Paper on Domain Name Security

Today ICANN releases a paper with the title "DNSSEC @ ICANN - Signing the root zone: A way forward toward operational readiness". The paper explains in more detail than earlier documents what ICANN view on signing of the root zone is. I think the key points mentioned in this paper are true, and in general, I think this document is a good read. It is not long, and summarizes what I would call the current view is. more

ICANN Chairman’s Durban Roundup

Respected ICANN Chairman of the Board Steve Crocker has wrapped up his organisation's 47th International Meeting, held in Durban last week, with a message to the community. This message, reproduced here in its entirety, provides both a useful and concise summary of the Durban meeting and insights into the Chairman's view of where ICANN stands at the moment, the successes it has notched up and the challenges it faces. more

ISOC Joins Forces with Shinkuro and Parsons to Promote Global Deployment of DNSSEC

The Internet Society today announced it has signed a Memorandum of Understanding with Shinkuro and Parsons to collaborate on multiple initiatives to promote the global deployment of Domain Name System Security Extensions (DNSSEC). more

Comcast Announces Completion of DNSSEC Deployment

Comcast, a leading ISP in the U.S., has fully deployed Domain Name System Security Extensions (DNSSEC) according to a company announcement today. Jason Livingood, Comcast's Vice President of Internet Systems writes: "As of today, over 17.8M residential customers of our Xfinity Internet service are using DNSSEC-validating DNS servers. In addition, all of the domain names owned by Comcast, numbering over 5,000, have been cryptographically signed. All of our servers, both the ones that customers use and the ones authoritative for our domain names, also fully support IPv6." more