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Everything You Need to Know About IPv4 vs. IPv6

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How Failure To Maintain IPv6 Is Hindering Law Enforcement

Recently, the FBI, DEA and even the Canadian Mounted Police have suggested that the switch to IPv6 is making it more difficult to track criminals online, those who would traffic in things such as drugs or child pornography, in addition to hackers, botnets, kidnappers and terrorists. Under IPv4, it wasn't very difficult to find offenders online via their IP addresses. The American Registry of Internet Numbers (ARIN) would hand out the address and internet providers would log them into the public WHOIS database. more

Ready or Not… Here Come the IRC-Controlled SIP/VoIP Attack Bots and Botnets!

A story... ZZZ Telemarketing (not a real name) is locked in a heated fight with their bitter rival, YYY Telemarketing (also not a real name), to win a very large lead generation contract with Customer X. Customer X has decided to run a test pitting the two companies against each other for a week to see who can generate the most leads. The ZZZ CEO has said to his staff that it is "do or die" for the company. If they fail to win the contract, they will have to shut down -- they need to do "whatever it takes" to win over YYY. A ZZZ staffer discovers that part of why YYY has consistently underbid them is because they are using SIP trunks to reduce their PSTN connection costs. But the staffer also discovers that YYY is using very cheap voice service providers who run over the public Internet with no security... more

Simple Overview of ICANN and the IANA Transition by Vint Cerf

Google has released a Doodle Video Animation of its VP and Chief Internet Evangelist, Vint Cerf, explaining inner workings of the Internet, formation of ICANN and the IANA transition. more

The End of the (IPv4) World is Nigher!

Funny how some topics seem sit on a quiet back burner for years, and then all of a sudden become matters of relatively intense attention. Over the past few weeks we've seen a number of pronouncements on the imminent exhaustion of the IP version 4 address pools. Not only have some of the Regional Internet Registries (RIRs) and some national registry bodies made public statements on the topic, we've now seen ICANN also make its pronouncement on this topic... Why the sudden uptake of interest in this topic? I suspect that a small part of this may be my fault! more

On the Hunt for “Critical Internet Resources”

I'm writing this column in November, and that means that it is time for the traveling circus known as the Internet Governance Forum (IGF) to come down to earth, unpack its tents and sell tickets for its annual song and dance routine. The script for this year's show has been changed, and after being excluded from the main arena last year at the Athens gig, the headline act of "Critical Internet Resources" is taking a starring role this year in Rio. Some folk are even saying that it is the single most contentious issue to be scheduled at this year's IGF show. So what are "Critical Internet Resources" anyway? If folks are going to spend all this time, energy and carbon emissions traveling to Rio to talk on this topic, then wouldn't it be helpful to understand what it means in the first place? There are probably a number of ways to answer this question, so in this heavily opinionated column I'd like to look at the range of possible answers to this question. more

IPv6: Beware of Dirty, Muddy IPv4 Addresses as the Pool Dries Up

Mid March a special plenary session of the Canadian standard committee isacc was convened in Ottawa to review the final report of the Canadian IPv6 Task Group. It was unanimously approved and the essence of its 66 pages are seven recommendations for Government, Industry, Service and Content providers, and the regulator, CRTC to proceed with diligence, even some sense of urgency. One paragraph provides an interesting new twist... more

IPv4 Market Heats Up While Supply Dwindles

Doug Madory, Director of Internet Analysis at Dyn reports that while the available supply of IPv4 addresses is in sharp decline, the market for these virtual commodities is heating up. In recent months, the pace of the address transfers has greatly accelerated as evidenced by RIPE's table of IPv4 transfers, as well as the increasing number of IPv4 brokers facilitating the exchange of IPv4 address space. more

Cogent Communications Offers $206 Million in Secured Notes Backed by IPv4 Addresses

Cogent (CCOI) recently announced that it was offering secured notes for $206M. The unusual part is what it’s using as security: some of its IPv4 addresses and the leases on those IPv4 addresses... Cogent has been leasing out addresses for several years. All internet service providers (ISPs) give IP addresses to their users, but Cogent was among the first to lease those addresses independently of internet access. more

The End of End-to-End?

One of the major principles of the architecture of the Internet was encapsulated in a paper by Saltzer, Reed and Clark, "End-to-End Arguments in System Design". This paper, originally published in 1981, encapsulated very clearly the looming tension between the network and the application: "The function in question can completely and correctly be implemented only with the knowledge and help of the application standing at the end points of the communication system. Therefore, providing that questioned function as a feature of the communication system itself is not possible." At the time this end-to-end argument was akin to networking heresy! more

IPv4 Addresses Not Property, Canada Weighs in on the Nortel/Microsoft Transfer

The recent tempest in a teacup on ARINs PPML list over the transfer of IP address blocks from Nortel (a company in Chapter 11) to Microsoft has some interesting Internet Governance dimensions that are yet to be discussed. One aspect that has been overlooked amidst all the sound and fury, is the governmental perspective on IP address transfers. more

Is IPv6 an Essential Precondition for Internet of Things? Or Are Things Just Fine with IPv4?

It has often been claimed that IPv6 and the Internet of Things are strongly aligned, to the extent that claims are made they are mutually reliant. An Internet of Things needs the massively expanded protocol address space that only IPv6 can provide, while IPv6 needs to identify a compelling use case to provide a substantive foundation to justify the additional expenditures associated with a widespread deployment of this new protocol that only the Internet of Things can provide. more

Internet Zombies

Today on Dave Farber's IP list, someone revived the ancient argument that ICANN imposes limits on the number of top level domains (TLDs) because to have more than a few will cause DNS to wobble and cause the internet to collapse. Although long discredited, that argument hangs around like a zombie. ICANN has never been able to adduce a shred of proof that there is anything to support that assertion... more

IPv6 Deployment Around the World: A New Digital Divide?

Alain Durand, Principal Technologist at ICANN, visited Georgia Institute of Technology last week for a talk on the global adoption of Internet Protocol version 6 (IPv6). The Internet Governance Project organized the talk in cooperation with Atlanta's Technology Development Center (ATDC) and the Institute for Information Security and Privacy. Durand, who was involved in the IPv6 standardization efforts at IETF back in the early to mid-1990s, offered a clear eyed assessment of the protocol's critical flaw... more

North American Saw Complete Exhaustion of IPv4 Address Space Inventory in Q3, 2015

Akamai Technologies today released its Third Quarter, 2015 State of the Internet Report with updates on IPv4 exhaustion and IPv6 adoption. more

Worm Propagation Strategies in an Ipv6 Internet

A recent paper called "Worm Propagation Strategies in an IPv6 Internet", written by Steven M. Bellovin, Angelos Keromytis, and Bill Cheswick, examines whether or not the deployment of IPv6 will in fact provide a substantial level of barrier against worms. Shared below are the introductory paragraphs from this paper. "In recent years, the internet has been plagued by a number of worms. One popular mechanism that worms use to detect vulnerable targets is random IP address-space probing..." more