DNS Security


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

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

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

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

DNS Security / Recently Commented

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»

DNS Amplification Attacks: Out of Sight, Out of Mind? (Part 1)

Geoff Huston's recent post about the rise of DNS amplification attacks offers excellent perspective on the issue. Major incidents like the Spamhaus attack Geoff mentions at the beginning of his post make headlines, but even small attacks create noticeable floods of traffic. These attacks are easy to launch and effective even with relatively modest resources and we see evidence they're occurring regularly. Although DNS servers are not usually the target of these attacks the increase in traffic and larger response sizes typically stress DNS infrastructure and require attention from operation teams. more»

GSA Looking Into .gov Outages

"The General Services Administration is analyzing what caused an outage of .gov websites for a few hours Wednesday morning," reports Federal Times. Officials said the problem involved so-called DNSSEC cybersecurity measures that affected access to certain .gov sites, according to GSA spokeswoman Mafara Hobson. 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»

DNS, DNSSEC and Google's Public DNS Service

For some time now we've been tracking the progress of the deployment of DNSSEC in the Internet. Its been a story of an evolution of the measurement technique... In the process we've learned perhaps more than we had wanted to about the behaviour of Flash engines, Apache web servers and FreeBSD system tuning, and also learned much more than we had anticipated about the finer details of Google's online ad presentation behaviour. But one thing we did not see in all of this was any large scale jumps in the level of client use of DNSSEC validation over this period at the start of the year. 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»

First "Africa DNS Forum" To Be Streamed Live July 12 and 13 From Durban, South Africa

The first Africa DNS Forum will take place on Friday, July 12, and Saturday, July 13, 2013, in Durban, South Africa, in advance of next week's ICANN 47 meeting. Jointly organized by AfTLD, ICANN and the Internet Society, the Africa DNS Forum "aims to establish a platform for the DNS community across Africa and to advance the domain name industry and domain name registrations on the continent."  more»

What Smaller Institutions Can Learn from DDoS Attacks on Big Banks

Since last fall, several waves of distributed denial of service (DDoS) attacks have targeted major players in the U.S. banking industry. JPMorgan Chase, Wells Fargo and PNC were among the first to sustain intermittent damage. Eventually, the top 50 institutions found themselves in the crosshairs... In the months to come, security experts would praise the banks' collective response, from heightened DDoS protection to candid customer communications.. these larger institutions have learned some painful lessons that smaller firms might heed as they seek to minimize risks. more»