DNS Security


 The movement is on, DNSSEC, ready set go! Just make sure you are ready when you go!

 DNSSEC technology standards have been stable and mature since 2007, with only updates, clarifications, and new functionality added since then.

 Some folks have already asked me if DNSSEC could have prevented Twitter.com traffic from being hijacked. In this case, the answer is, "No".

 Over the next few years we should expect to see applications leveraging DNSSEC in ways we cannot imagine now.

DNS Security / Recently Commented

Credit Card Breaches a Salutary Lesson for DNSSEC Adoption

Maintaining an 150 year old house requires two things, a lot of time and a lot of trips to the hardware store. Since the closest hardware store to my house is Home Depot, it is rare that a weekend passes without at least one trip to Home Depot. So now in the wake of the Home Depot data breach I am through no fault of my own in a situation where any or all of the bank cards I use regularly could be cancelled if the issuer decides they might be compromised. And this is not the first time this has happened to me this year. more»

Watch ION Belfast / UKNOF Live Tuesday, Sept 9, for IPv6, DNSSEC, BGP Security and More

On Tuesday, September 9, 2014, you have a great opportunity to watch live a very packed agenda full of great sessions about IPv6, DNSSEC, routing/BGP security and other components of Internet infrastructure streaming out of the UKNOF / ION Belfast event in Belfast, UK. All of the sessions can be seen live. more»

Call for Nominations: M3AAWG J. D. Falk Award Seeks Stewards of a Better Online World

Anyone seeking to honor a groundbreaking contribution toward a better online world should submit a nomination for the 2014 M3AAWG J. D. Falk Award. Presented to people whose work on specific projects made the Internet a safer, more collaborative, more inclusive place, the J. D. Falk Award has recognized leaders and pioneers who saw elements of the online experience that needed improvement and took action to fix them.  more»

Some Internet Measurements

At APNIC Labs we've been working on developing a new approach to navigating through some of our data sets the describe aspects of IPv6 deployment, the use of DNSSEC and some measurements relating to the current state of BGP. The intent of this particular set of data collections is to allow the data to be placed into a relative context, displaying comparison of the individual measurements at a level of geographic regions, individual countries, and individual networks. more»

A Great Bit of DNSSEC and DNS at IETF 90 Next Week

For those people tracking the evolution and deployment of DNSSEC or who are just interested in "DNS security" in general there is a great amount of activity happening next week at IETF 90 in Toronto. I dove into this activity in great detail in a recent post, "Rough Guide to IETF 90: DNSSEC, DANE and DNS Security", and summarized the activity in a Deploy360 post... more»

Now Available - A Trend Chart Tracking DNSSEC Validation Globally

How can we track the amount of DNSSEC validation happening globally? Is there a way we can see the trend over time to (we hope!) see validation rise? At the recent excellent DNSSEC Workshop at ICANN 50 in London Geoff Huston let me know that his APNIC Labs team has now created this exact type of trend chart. more»

Painting Ourselves Into a Corner with Path MTU Discovery

In Tony Li's article on path MTU discovery we see this text: "The next attempt to solve the MTU problem has been Packetization Layer Path MTU Discovery (PLPMTUD). Rather than depending on ICMP messaging, in this approach, the transport layer depends on packet loss to determine that the packet was too big for the network. Heuristics are used to differentiate between MTU problems and congestion. Obviously, this technique is only practical for protocols where the source can determine that there has been packet loss. Unidirectional, unacknowledged transfers, typically using UDP, would not be able to use this mechanism. To date, PLPMTUD hasn't demonstrated a significant improvement in the situation." Tony's article is (as usual) quite readable and useful, but my specific concern here is DNS... more»

3 DNSSEC Sessions Happening At ICANN 50 Next Week in London

As I mentioned in a post to the Deploy360 blog today, there are three excellent sessions relating to DNSSEC happening at ICANN 50 in London next week: DNSSEC For Everybody: A Beginner's Guide; DNSSEC Implementers Gathering; DNSSEC Workshop. Find out more. more»

DNSSEC Workshop on March 26 to Be Streamed Live from ICANN 49 in Singapore

If you are interested in DNSSEC and how it can make the Internet more secure, the DNSSEC Workshop at ICANN 49 in Singapore will be streamed live for anyone to listen and view. One of three DNSSEC-related technical events at ICANN 49, the DNSSEC Workshop takes place on Wednesday, March 26, from 8:30am - 2:45pm Singapore time. more»

CircleID's Top 10 Posts of 2013

Here we are with CircleID's annual roundup of top ten most popular posts featured during 2013 (based on overall readership). Congratulations to all the participants whose posts reached top readership and best wishes to the entire community for 2014. more»

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»

LAC, the DNS, and the Importance of Comunidad

The 1st Latin American & Caribbean DNS Forum was held on 15 November 2013, before the start of the ICANN Buenos Aires meeting. Coordinated by many of the region's leading technological development and capacity building organizations, the day long event explored the opportunities and challenges for Latin America brought on by changes in the Internet landscape, including the introduction of new gTLDs such as .LAT, .NGO and others. 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»

DNS Amplification Attacks: Out of Sight, Out of Mind? (Part 3)

Previous posts (Part 1 and Part 2) offer background on DNS amplification attacks being observed around the world. These attacks continue to evolve. Early attacks focused on authoritative servers using "ANY" queries for domains that were well known to offer good amplification. Response Rate Limiting (RRL) was developed to respond to these early attacks. RRL, as the name suggests, is deployed on authoritative servers to rate limit responses to target names. more»

On the Time Value of Security Features in DNS

There are some real problems in DNS, related to the general absence of Source Address Validation (SAV) on many networks connected to the Internet. The core of the Internet is aware of destinations but blind to sources. If an attacker on ISP A wants to forge the source IP address of someone at University B when transmitting a packet toward Company C, that packet is likely be delivered complete and intact, including its forged IP source address. Many otherwise sensible people spend a lot of time and airline miles trying to improve this situation... The problems created for the Domain Name System (DNS) by the general lack of SAV are simply hellish. more»