Greylisting Still Works - Part II

In my last post I blogged about greylisting, a well-known anti-spam technique for rejecting spam sent by botnets. When a mail server receives a an attempt to deliver mail from an IP address that's never sent mail before, it rejects the message with a "soft fail" error which tells the sender to try again later. Real mail senders always retry, badly written spamware often doesn't. I found that even though everyone knows about greylisting, about 2/3 of IPs don't successfully retry. more

Technical Comments on Mandated DNS Filtering Requirements of H. R. 3261 (“SOPA”)

About two months ago, I got together with some fellow DNS engineers and sent a letter to the U. S. Senate explaining once again why the mandated DNS filtering requirements of S. 968 ("PIPA") were technically unworkable. This letter was an updated reminder of the issues we had previously covered... In the time since then, the U. S. House of Representatives has issued their companion bill, H. R. 3261 ("SOPA") and all indications are that they will begin "markup" on this bill some time next week. more

Providing Persistent Domain Names Under .ARPA

Some domains are too big to fail. Quite apart from the obvious ones like google.com and facebook.com, upon whose availability our everyday lives depends, there are many others upon which the infrastructure of the Internet (and much of the modern world itself) depends. These are domains like w3.org and ietf.org, which host the technical specifications which describe the World Wide Web and the Internet themselves. more

The Christmas Goat and IPv6 (Year 2)

Last year the municipality of Gavle asked my company if we could help them load share the streaming pictures of the famous Christmas goat in Gävle. I accepted the invitation and set up a separate domain. My own interest in this was of course to track the usage of IPv6 and validation of DNSSEC from the visitors of the site. more

ICANN Senate Hearing: The Battle Between Intellectual Property and Multistakeholderism

The US Senate Committee on Commerce, Science and Transportation Hearing on ICANN's Expansion of Top Level Domain Names on December 8, 2001 was all about strategy. The strategy was simple: while the world has its attention turned to the debate on the copyright legislative proposals of the Stop Online Piracy Act (SOPA) and the PROTECT IP Act, let's have another ICANN hearing and try to re-open trademark protection for new gTLDs. more

Fear of New gTLD Monopolies Is Overblown

You should not worry too much if some of the new generic Top-Level Domain names (gTLDs) become monopolies. ICANN and the registries won't charge monopoly prices as long as they have to worry about the government stepping in. Monopolies normally present two problems for consumers: restricted output and higher prices. In the case of the new gTLDs, restricted output is caused only by ICANN's monopoly over approving gTLD applications. more

FCC to Hold Two December Workshops on PSTN Transition to New Technologies

The US Federal Communications Commission (FCC) recently issued a public notice that it will be holding two workshops on the transition of the public switched telephone network (PSTN) to "new technologies" such as voice-over-IP (VoIP). The workshops will be held on December 6 and 14, 2011, at the FCC's office in Washington, DC. The public notice states the goal as... more

White House Issues Cloud Computing Policy Standards

U.S. Office of Management and Budget released a memo today establishing a program to reduce "duplicative efforts, inconsistencies and cost inefficiencies when assessing and authorizing cloud systems." The initiative called, Federal Risk and Authorization Management Program (FedRAMP), is aimed to develop a standardized approach to security assessment, authorization, and continuous monitoring for cloud products and services through standardized security requirements and controls. more

U.S. Government Strongly Affirms ICANN Model and New gTLDs

Larry Strickling, who runs the NTIA (the part of the U.S. Department of Commerce that handles ICANN), yesterday gave an important and remarkable speech to the Practicing Law Institute about Internet governance. His speech, timed to coincide with an orchestrated ICANN-bashing across town in the Senate, was a striking defense of the ICANN model and a repudiation of special pleading outside the process. more

How a New gTLD Should Choose a Back-end Registry System - Part 3

This part 3 of the selecting a back-end registry service provider series focuses on Whois and sharing data in new gTLDs. If you've ever looked up information about a domain name you've used a Whois service. It's the public information system about contact information for a domain name or IP addresses, though in this article, we will just talk about domain name Whois. In some generic and sponsored Top Level Domains (gTLDs), Whois is run authoritatively by the gTLD. In older gTLDs such as .com and .net, the authoritative Whois service is run by the registrar responsible for the domain name. While some TLD operators run their own infrastructure... more

The Death of TLD Front Running

In an article published over two years ago, I cited a disturbing trend of third parties seeking to obtain national trademark registrations in an apparent attempt to game ICANN's new gTLD process. While many of these applications have withered and died on the vine some have sneaked through. However, it appears that the United States Trademark Trial and Appeal Board (TTAB) has issued a very well-reasoned and articulate opinion... more

US Senate Committee Holds Hearing on ICANN’s New TLD Expansion

As previously noted, the U.S. Senate Committee on Commerce, Science, and Transportation today held a full committee hearing on ICANN's expansion of top level domains (TLDs). The hearing was held to examine the merits and implications of the program and ICANN's efforts to address concerns raised. ICANN will begin accepting applications for new TLDs on January 12, 2012. more

U.S. Senate Committee on Commerce, Science, and Transportation Holding Full Hearing on New TLDs

On Thursday, December 8, the U.S. Senate Committee on Commerce, Science and Transportation will host a full committee hearing on "ICANN's Expansion of Top-Level Domains." According to the Committee's website, the hearing will "examine the merits and implications of this new program and ICANN's continuing efforts to address concerns raised by the Internet community." more

Beyond Words: Diverse Voices at ICANN and Miscommunications

A few days ago, I sat in a meeting here in Ottawa with our IT Director and Director of Marketing and Communications. These are two highly intelligent people working on the same team, for the same company, talking about a common subject. And yet, something was amiss in achieving mutual understanding. Each was seeing things from his own distinct perspective and as such, speaking his own language. As I reflected on my team's internal dynamic, I began to see parallels in areas that have an even more direct impact on the Internet ecosystem. more

Borders, In Bankruptcy, Aims To Sell 65,536 IPv4 Addresses at $12/Address

With IPv4 address exhaustion upon us, it appears that the going market rate for IPv4 addresses is now $12/address. Over at the Register, Kevin Murphy reports on a bankruptcy filing from Borders seeking to sell a /16 block of to healthcare software vendor Cerner for a total of $786,432. At $12 per IPv4 address, this sets a new public record given that the previous high was Microsoft's acquisition of a block of Nortel IPv4 addresses... more