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Quick UDP Internet Connection (QUIC) is a network protocol initially developed and deployed by Google, and now being standardized in the Internet Engineering Task Force. In this article we'll take a quick tour of QUIC, looking at what goals influenced its design, and what implications QUIC might have on the overall architecture of the Internet Protocol. more
As part of its efforts to speed up the delivery of web content, Google has proposed changes to Transmission Control Protocol (TCP), "the workhorse of the Internet." Yuchung Cheng who works on the transport layer at Google wrties: "To deliver content effectively, Web browsers typically open several dozen parallel TCP connections ahead of making actual requests. This strategy overcomes inherent TCP limitations but results in high latency in many situations and is not scalable. Our research shows that the key to reducing latency is saving round trips. We’re experimenting with several improvements to TCP." more
Do you know of someone who has made the Internet better in some way who deserves more recognition? Maybe someone who has helped extend Internet access to a large region? Or wrote widely-used programs that make the Internet more secure? Or served in some capacity behind the scenes in Internet services? Or maybe someone who has been actively working for open standards and open processes for the Internet? more
We used to think of computer networks as being constructed using two fundamental common infrastructure components: names and addresses. Every connected device had a stable protocol address to allow all other devices to initiate a communication transaction with this device by addressing a data packet to this protocol address. And every device was also associated with a name, allowing human users and human use applications to use a more convenient alias for these protocol addresses. more
I have been attending the American Registry for Internet Numbers (ARIN) meeting in Toronto. ARIN is one of the RIRs, i.e., the Internet address registry and policy making authority for North America. Although I have observed and participated on RIR lists for some time and interacted with RIR representatives at ICANN, WSIS and IGF, this is the first time I have been able to attend a meeting. I'm glad I did. more
A "New IP" framework was proposed to the ITU last year. This framework envisages a resurgence of a network-centric view of communications architectures where network-managed control mechanisms moderate application behaviors. It's not the first time that we've seen proposals to rethink the underlying architecture of the Internet's technology (for example, there were the "Clean Slate" efforts in the US research community a decade or so ago) and it certainly won't be the last. more
While conventional cyber attacks are evolving at breakneck speed, the world is witnessing the rise of a new generation of political, ideological, religious, terror and destruction motivated "Poli-Cyber™" threats. These are attacks perpetrated or inspired by extremists' groups such as ISIS/Daesh, rogue states, national intelligence services and their proxies. They are breaching organizations and governments daily, and no one is immune. more
According to IDC, smartphones outsold personal computers, laptops included in Q4 2010! Nokia just announced the demise of the Venerable Symbian in favour of Windows 7 phone and Microsoft's bing search engine! Tectonic shifts are under way to adapt to the rise of wireless broadband, an all IP world, and the growing weight of Apple and Google Android. It is also time to head once again for Barcelona with the Mobile World Congress starting on the 14th. Highlights this year? more
So you are the IT regulator for a country and you are convinced that the shortage of IPv4 address space represents a threat to the development of the Internet in your country and you want to do something about it. Being that as regulator you don't really run the countries IP networks, what can you really do? I've heard many regulators in over 30 countries grapple with this problem. The purpose of this article is to think through some ideas to guide action on using (or not) regulation to drive IPv6 adoption. more
The North American Network Operator's Group held its 64th Meeting in San Francisco in early June. Here's my impressions of some of the more interesting sessions that grabbed my attention at this meeting... At the start of the year, the US FCC voted to reclassify Broadband Internet access services under Title II of the US Telecommunications ACT -- effectively viewing Internet access providers as common carriers, with many of the rights and responsibilities that goes with this classification. more
Do you care any more about zillion different IM services? Do you care about the IM protocol wars that have plagued the usage of IM for the last years? Odds are that if you are an IM user like me, you probably don't. Why not? Simple... we've unified the IM services on the client side and basically stopped caring about the various services and protocols. I was reminded of this fact this morning when I received a message saying that an update was available for Adium on my Mac that solved a really annoying disconnection problem with Yahoo!Messenger. more
I'm sure we've all heard about "the Open Internet." The expression builds upon a rich pedigree of term "open" in various contexts. For example, "open government" is the governing doctrine which holds that citizens have the right to access the documents and proceedings of the government to allow for effective public oversight, a concept that appears to be able to trace its antecedents back to the age of enlightenment in 17th century Europe. more
It is not often I go out to my driveway to pick up the Washington Post -- yes, I still enjoy reading a real physical paper, perhaps a sign of age -- and the headline is NOT about how the (insert DC sports team here) lost last night but is instead is about an IT technology. That technology is the Border Gateway Protocol (BGP), a major Internet protocol that has been around for more than a quarter century, before the Internet was commercialized and before most people even knew what the Internet was. more
In Tony Li's article on path MTU discovery we see this text: "The next attempt to solve the MTU problem has been Packetization Layer Path MTU Discovery (PLPMTUD). Rather than depending on ICMP messaging, in this approach, the transport layer depends on packet loss to determine that the packet was too big for the network. Heuristics are used to differentiate between MTU problems and congestion. Obviously, this technique is only practical for protocols where the source can determine that there has been packet loss. Unidirectional, unacknowledged transfers, typically using UDP, would not be able to use this mechanism. To date, PLPMTUD hasn't demonstrated a significant improvement in the situation." Tony's article is (as usual) quite readable and useful, but my specific concern here is DNS... 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
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