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The folks at Renesys pointed out earlier this week some interesting activity surrounding the L-root name server, highlighting some activity that should give us all yet another reason to be concerned about the security and integrity of the Internet DNS... considering that a great deal of malware today tends to corrupt the DNS resolution path in order to further exploit compromised end-systems, and that corruption, or any other actual end-system compromise, might well be unnecessary if the root were compromised -- well, think of the possibilities! more
As far as facebook is concerned, your email is your identification. This is true for other social networks like linkedin, and is slowly catching on to many other Web 2.0 services. It actually makes a lot of sense that your unique identifier (your "ID") would be your email -- it's unique by definition, it's easy to remember and most services need the email information anyway... So if email is destined to become the equivalent of your social security number or identification number (depending on which country you live in) how do we proof check that the email address we typed does not contain any typos? more
There have been a number of attacks on the root name servers over the years, and much written on the topic. (A few references are here, here and here.) Even if you don't know exactly what these servers do, you can't help but figure they're important when the US government says it is prepared to launch a military counterattack in response to cyber-attacks on them. more
Once again I find myself thinking about the nature of the asymmetric warfare threat posed by politically motivated DDoS (Estonia in 07, Korea in 02, and now China vs. CNN in 08). I keep thinking about it in terms of asymmetric warfare, a class of warfare where one side is a traditional, centrally managed military with superior uniformed numbers, weaponry, and skill. On the other we have smaller numbers, usually untrained fighters with meager weapons, and usually a smaller force. Historical examples include the North Vietnamese in the 20th century and even the American Revolution in the 18th century. Clearly this can be an effective strategy for a band of irregulars... more
Following a post on the DomainState forum today, a number news and blogs have criticized Network Solutions for front running domain names that customers try to register. (See for instance today's report on DomainNameNews). Jonathon Nevett, Vice President of Policy at Network Solutions, has offered the following in response to the news break... more
When I initiated NNSquad (Network Neutrality Squad), one of my primary concerns was that many seemingly reportable "events" that can occur on the Internet -- and that might seem on their face to be network neutrality "violations" -- might actually be caused by innocent technical issues related to ISP operations, testing anomalies, or misinterpretation of test or otherwise observed data. Analysis of these situations -- which may invoke security and privacy concerns -- can be quite complex, and without a reasonably complete picture of events can also be considerably problematic... more
If you are not already using OpenDNS on your home network I have one question for you. Why not? When it debuted, OpenDNS' main advantage was speed. It is a great deal faster than the DNS operated by most ISPs so, if you configure your border router/DHCP server to use OpenDNS name servers, the t'internet magically speeds up... On looking at the OpenDNS stats for my home network the other day, one item gave me cause to scratch my head a little. There was a non-trivial number of AAAA look-ups going on. In case you don't know (and I know you do), AAAA look-ups are IPv6 address look-ups... more
In June 2004, Yahoo! and a number of other companies got together to announce the Anti-Spam Technical Alliance or ASTA. While it appears to have been largely silent since then, ASTA did at least publish an initial set of best practices the widespread adoption of which could possibly have had some impact on spam... The majority of these are clearly aimed at ISPs and end users, but some are either generally or specifically relevant to email providers such as Yahoo!, Google or Microsoft... The problem: Since February this year, we have been receiving a significant quantity of spam emails from Yahoo!'s servers. In addition to their transport via the Yahoo! network, all originate from email addresses in yahoo.com, yahoo.co.uk and one or two other Yahoo! domains. Every such message bears a Yahoo! DomainKeys signature... more
As expected, VeriSign raised the price of domain names, effective in October. New prices wholesale prices (to the registrar) for .com domain names are going from $6.42 to $6.86, while .net will increase from $3.85 to $4.23. This news came a few days ago in a letter to registrars. (Hint to consumers: renew your domains now.) ...So, basically, many if not most of VeriSign's registry costs have been falling at an exponential rate. Hard disk storage, computing performance, bandwidth, RAM storage... yet the cost is going up. How is this justified? more
Last week Sen. Snowe filed bill S.2661, the Anti-Phishing Consumer Protection Act of 2008, or APCPA. While its goals are laudable, I have my doubts about some of the details. The first substantive section of the bill, Section 3, makes various phishy activities more illegal than they are now in its first two subsections. It makes it specifically illegal to solicit identifying information from a computer under false pretenses, and to use a domain name that is deceptively similar to someone else's brand or name on the web in e-mail or IM to mislead people... more
The Internet Commerce Association (ICA) has posted a position paper and analysis of S. 2661, introduced on 2/25/08 in the US Senate. While we are firmly opposed to phishing and other criminal activities that may utilize domain names we are very concerned about the provisions of the proposal that appear to provide trademark owners with a means to avoid both UDRP and ACPA actions and alternatively bring private claims against domain names with a lower burden of proof and the potential for far higher monetary damages, without even requiring an allegation that the DN was in any way being utilized in a phishing scheme... more
The Comcast traffic shaping case has stirred up passionate debate. Net neutrality proponents are calling for Comcast's head on a platter. The common argument is that Comcast's policy may stifle innovation and competition. If a service provider is allowed to exercise unregulated discretion in how it treats subscriber traffic, it is a slippery slope toward anti-competitive practices. Net neutrality says keep your hands off. Some are preaching net neutrality as if it were an inalienable human right like freedom of speech... more
The main reason for developing a new internet protocol was based on lack of address; however this was not the only reason. Unfortunately, many people think of IPv6 only as enormous address space, but there are a lot of other advantages, for example... authorizations and authentication function are implemented directly in the protocol and are mandatory... automatic configuration of network interfaces based on their physical address... protocol itself recognizes data streams which must be transmitted in real time, and the data must be processed with highest priority... more
I am writing this from the Satellite 2008 conference in Washington, D.C. As I make my way through the exhibits, I see many vendors advertising IP capabilities in their hardware products or network services. But when asked about IPv6 support, the common reply is a not so believable "it is on our roadmap" followed by a somewhat vague delivery date. Although IPv6 development has been slow across the board, it appears to be moving even more slowly in the satellite world... more
A few hours ago, Pakistan Telecom (AS 17557) began advertising a small part of YouTube's assigned network. This story is almost as old as BGP. Old hands will recognize this as, fundamentally, the same problem as the infamous AS 7007 from 1997, a more recent ConEd mistake of early 2006 and even TTNet's Christmas Eve gift 2005. Just before 18:48 UTC, Pakistan Telecom, in response to government order to block access to YouTube, started advertising a route for 208.65.153.0/24 to its provider... more
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