There's a great fight going on right now in Philadelphia...The case is about a Pennsylvania statute [PDF] that mandates that Pennsylvania ISPs remove access to sites that the AG believes contain child pornography. Now, child pornography is abhorrent and any ISP will cooperate in taking down such sites that it is hosting. But the problem is that in complying with the statute with respect to sites the ISPs don't themselves host, ISPs are (rationally) using either IP blocking ("null routing") or "domain poisoning" techniques, both of which (particularly the IP number blocking) result in rendering inaccessible millions of perfectly legal sites. more»
Yesterday morning (26-April-2011), in US Bankruptcy Court for the District of Delaware, Judge Kevin Gross signed an order authorizing Nortel's sale of IPv4 addresses to Microsoft. This is an important moment for the Internet community, as it represents the beginning of a new market-based mechanism for the distribution of scarce IPv4 address resources. As the various Regional Internet Registry (RIR) organizations exhaust their supply, traditional "needs-based" distribution will become impossible. more»
A paper by Tony Hain was recently published in the Internet Protocol Journal which sparked a debate on Slashdot. Particularly, Tony's paper suggested that IANA will run out of IP addresses in 5 years or less. However, there is another paper written by Geoff Hutson which projects that we have enough IPv4 address until 2022. The differences got most people confused. So who is right? more»
The Time Square Ball bringing in 2008 had more than 9,500 LED bulbs displaying 16 million colours while consuming power equivalent to about ten toasters. This compares to 600 incandescent and halogen bulbs adorning last year's Ball. Easy to forget that most mobile devices used by Time Square revelers were behind IPv4 NAT's and that always on applications such as Instant Messaging, Push e-mail, VoIP or location based services tend to be electricity guzzlers. It so happens that applications that we want always to be reachable have to keep sending periodic keepalive messages to keep the NAT state active... more»
Dynamic Host Configuration Protocol (DHCP) is a protocol intended to enable machines (servers, game consols, etc) wishing to be "online" the ability to request Internet Protocol information from a DHCP server automatically. ... In this article we will begin to outline some of the fundamental differences between DHCPv4 and DHCPv6, explore historical uses of DHCPv4 and how those concepts will adapt/change in IPv6. more»
The country's first criminal trial about spam ended in Leesburg, Virginia earlier this month with a conviction of Jeremy Jaynes, better known under his nom de spam of Gavin Stubberfield. I was an expert witness for the prosecution, the Commonwealth of Virginia. The case was brought under Virginia's state anti-spam law, not the weaker Federal CAN-SPAM act... more»
In his article titled, "End of Life Announcement", John Walker (author of the Speak Freely application) makes a few arguments about Network Address Translation (NAT) that are simply not true: "There are powerful forces, including government, large media organisations, and music publishers who think this situation is just fine. In essence, every time a user--they love the word "consumer"--goes behind a NAT box, a site which was formerly a peer to their own sites goes dark, no longer accessible to others on the Internet, while their privileged sites remain. The lights are going out all over the Internet. ...It is irresponsible to encourage people to buy into a technology which will soon cease to work." more»
This growth is clearly unsustainable within the IPv4 address space. Not every country can have these utilization levels. The hunger for new addresses is greatest in China (currently at 1 IPv4 address per 4 inhabitants) and India (1 address per 53 inhabitants). To put these at the modest level of 1 address per inhabitant requires more than 2.2 billion addresses, where there are currently only 290 million left... Given these numbers and the overall strong growth, any hopes of being able to reuse space that is allocated but not used (i.e. pre-CIDR) are futile. This demand dwarfs the entire US allocation. more»
In my spare time when I'm not dealing with the world of e-mail, I'm a politician so now and then I put on my cynical political hat. At the FTC Authentication Summit one of the more striking disagreements was about the merits and flaws of SPF and Microsoft's Sender-ID. Some people thought they are wonderful and the sooner we all use them the better. Others thought they are deeply flawed and pose a serious risk of long-term damage to the reliability of e-mail. Why this disagreement over what one might naively think would be a technical question? more»
A decade has passed since Jon Postel left our midst. It seems timely to look back beyond that decade and to look forward beyond a decade hence. It seems ironic that a man who took special joy in natural surroundings, who hiked the Muir Trail and spent precious time in the high Sierras was also deeply involved in that most artificial of enterprises, the Internet. more»
DNS rebinding attacks are real and can be carried out in the real world. They can penetrate through browsers, Java, Flash, Adobe and can have serious implications for Web 2.0-type applications that pack more code and action onto the client. Such an attack can convert browsers into open network proxies and get around firewalls to access internal documents and services. It requires less than $100 to temporarily hijack 100,000 IP addresses for sending spam and defrauding pay-per-click advertisers. Everyone is at risk and relying on network firewalls is simply not enough. In a paper released by Stanford Security Lab, "Protecting Browsers from DNS Rebinding Attacks," authors Collin Jackson, Adam Barth, Andrew Bortz, Weidong Shao, and Dan Boneh provide ample detail about the nature of this attack as well as strong defenses that can be put in place in order to help protect modern browsers. more»
I've been following the recent news on the World Summit on the Information Society, and it's getting really bizarre. The Wired article is one example of out of the out-of-this-world coverage on the World Summit; I heard a similar spin yesterday on a radio show that often shares material with the BBC. What king or dictator or bureaucrat has signed the document giving power over the Internet to one organization or another? Did I miss the ceremony? One laughable aspect of news reportage is that the founders and leaders of ICANN always avowed, with the utmost unction, that they were not trying to make policy decisions and were simply tinkering with technical functions on the Internet. more»
I don't normally cheer for Google when I don't own shares in the company, but this time I will make an exception. Alma Whitten, Software Engineer at Google, today posted to their Public Policy Blog that IP addresses shouldn't be considered Personally Identifiable Information (PII). This is not a problem in the United States but it is in the EU, and if the EU actually were to legislate this it would most definitely affect Microsoft and Google's business functionality in the EU... more»
I did a 2 hour interview on October 23rd with John Curran, Board Chair of ARIN the North American Regional Internet Routing Registry for the last decade. I now understand what is at stake with IPv6. Outside of a key core group of network engineers I think darn few people do understand. And not all of them agree on how the scenario plays out though virtually all say the situation is very serious. John believes that it is huge. It is as big as Y2K except no one knows a precise date by which everything has to be done... more»
Jaikumar Vijayan reporting in InfoWorld: "Microsoft has agreed to pay $7.5 million to purchase a block of 666,624 IPv4 addresses from bankrupt Canadian telecom equipment maker Nortel in a move that some see as a signal of the increasing value of IPv4 addresses. Last week, Nortel filed a motion seeking approval for the sale from the Bankruptcy Court for the District of Delaware. If the deal is approved, Microsoft would assume control of the IPv4 addresses, currently owned by Nortel, for about $11.25 a piece." more»
