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pierredv : networking   64

Sunday's Google Cloud outage impacted Gmail, YouTube, Snapchat, with global ripple effects | FierceTelecom, Jun 2019
"Google Cloud has bounced back from a major outage Sunday that impacted its own services, including YouTube and Gmail, as well as those of some of its clients."

"Aside of social media apps being down, the outage meant that some of Google's Nest customers couldn't use their Nest thermostats, Nest smart locks, and Nest cameras, according to Twitter posts on Google Nest."
FierceWireless  Google  cybersecurity  availability  networking 
june 2019 by pierredv
[pdf] Next-generation networks, next-level cybersecurity problems - Positive Technologies
"In preparation for the brave new world of 5G and IoT, the last few years have seen operators make significant CapEx investments in their next-generation networks. However, despite spending billions upgrading from a protocol developed in the 70’s (ss7) to Diameter (4G and 5G), flaws exist that allow an attacker to carry out eavesdropping, tracking, fraud, theft, and worse."
networking  cybersecurity  cyber-spectrum  spectrum-vulnerability  SS7  Diameter  cellular  PositiveTechnologies 
march 2019 by pierredv
"AT&T, Verizon gear up for 5G network slicing in 2020, 2021 | FierceWireless Jan 2019"
At its most basic, network slicing provides for a more efficient use of the network. Instead of allocating on a serialized basis, operators can do things in parallel by allocating network resources and applying certain quality of service (QoS) elements to them. Services could be priced based on the quality or performance that a business needs; even a traditional MVNO could be structured based on slice agreements.

With network slicing and 5G, the idea is for operators’ business customers to get connectivity and data processing tailored to their specific requirements—latency and/or speed, for example. The GSMA estimates (PDF) that in combination with other enablers and capabilities, network slicing will permit operators to address a revenue opportunity worth $300 billion by 2025.
FierceWireless  network-slicing  virtualization  networking  AT&T  Verizon  5G 
january 2019 by pierredv
The “robust yet fragile” nature of the Internet | PNAS 2005

The search for unifying properties of complex networks is popular, challenging, and important. For modeling approaches that focus on robustness and fragility as unifying concepts, the Internet is an especially attractive case study, mainly because its applications are ubiquitous and pervasive, and widely available expositions exist at every level of detail. Nevertheless, alternative approaches to modeling the Internet often make extremely different assumptions and derive opposite conclusions about fundamental properties of one and the same system. Fortunately, a detailed understanding of Internet technology combined with a unique ability to measure the network means that these differences can be understood thoroughly and resolved unambiguously. This article aims to make recent results of this process accessible beyond Internet specialists to the broader scientific community and to clarify several sources of basic methodological differences that are relevant beyond either the Internet or the two specific approaches focused on here (i.e., scale-free networks and highly optimized tolerance networks).
networking  Internet  vulnerability  complexity 
january 2019 by pierredv
MANET simulation studies - Kurkowski Camp Colagrosso 2005
Via Keith Gremban, 2018

Simulation is the research tool of choice for a majority of the mobile ad hoc network (MANET) community. However, while the use of simulation has increased, the credibility of the simulation results has decreased. To determine the state of MANET simulation studies, we surveyed the 2000-2005 proceedings of the ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). From our survey, we found significant shortfalls. We present the results of our survey in this paper. We then summarize common simulation study pitfalls found in our survey. Finally, we discuss the tools available that aid the development of rigorous simulation studies. We offer these results to the community with the hope of improving the credibility of MANET simulation-based studies.
simulation  methods  networking 
march 2018 by pierredv
Big Changes Ahead for Core Internet Protocols – IETF Journal - Mark Nottingham
"significant changes to the core Internet protocols are underway. While they are intended to be compatible with the Internet at large (since they won’t get adoption otherwise), they might be disruptive to those who have taken liberties with undocumented aspects of protocols or made an assumption that things won’t change."

TLS 1.3
IETF  Internet  protocols  networking 
february 2018 by pierredv
Network resilience: a systematic approach - IEEE Xplore Document
The cost of failures within communication networks is significant and will only increase as their reach further extends into the way our society functions. Some aspects of network resilience, such as the application of fault-tolerant systems techniques to optical switching, have been studied and applied to great effect. However, networks - and the Internet in particular - are still vulnerable to malicious attacks, human mistakes such as misconfigurations, and a range of environmental challenges. We argue that this is, in part, due to a lack of a holistic view of the resilience problem, leading to inappropriate and difficult-to-manage solutions. In this article, we present a systematic approach to building resilient networked systems. We first study fundamental elements at the framework level such as metrics, policies, and information sensing mechanisms. Their understanding drives the design of a distributed multilevel architecture that lets the network defend itself against, detect, and dynamically respond to challenges. We then use a concrete case study to show how the framework and mechanisms we have developed can be applied to enhance resilience.

Published in: IEEE Communications Magazine ( Volume: 49, Issue: 7, July 2011 )
resilience  networking  networks 
february 2017 by pierredv
Resilience Metrics — ENISA
"ENISA is working on the measurement frameworks and metrics for resilient networks and services. This belongs is under the broader umbrella of the of network resilience."

"In this area of activities ENISA launched in 2010 a study on Measurement Frameworks and Metrics for Resilient Networks and Services. The methodology included both a survey, a desktop research and further consultation through a Workshop. The overall work is also summarised in this video. "

"The European Union Agency for Network and Information Security (ENISA) is a centre of expertise for cyber security in Europe. The Agency is located in Greece with its seat in Heraklion Crete and an operational office in Athens."
resilience  networking  networks  ENISA  metrics 
february 2017 by pierredv
Three very confusing telecoms terms - Martin Geddes
For #1 "Best effort": “You got what you got” or (more formally) “nondeterministic performance”. Note that this is qualitatively worse than “random”, since random means it has properties that should hold over time, whereas nondeteriministic means no such assumption can be made. #3 Network "speed": The idea of “speed” conflates packet (de)serialisation time (i.e. how long it takes to “squirt” the packet over a link) with low contention (due to network idleness). It also conflates “speed of response” (delay) with “speed of download” (capacity). Better alternative(s)? Use “capacity” for capacity, “timely” for low latency and loss, and “responsive” for good (interactive) application performance.
Martin-Geddes  networking  semantics  terminology 
january 2016 by pierredv
Why do skyscrapers stand up (when networks fall down)?
There’s a good reason why we don’t sweat with fear when we walk under thousands of tons of metal and furniture held above our heads. Engineering of buildings is a very mature discipline. After all, we have millennia of experience at it. The materials we work with—concrete, steel, glass—have been around for a long time. . . . You can contrast this state of affairs with broadband performance engineering, which is very new and (in comparison) is an immature discipline. Many of the people who built the first packet networks are still alive and kicking. We have yet to have much turnover of generations to allow bad ideas to die off, and to get the fundamental science sorted out. As a result, broadband services often have poor cost or quality of experience outcomes, certainly in comparison to civil engineering. So why are they often more like comedy castles than soaring skyscrapers?
Martin-Geddes  networking  construction  architecture  broadband  metaphor 
september 2015 by pierredv
What’s Wrong With the Internet and How We Can Fix It: Interview With Internet Pioneer John Day | loriemerson
"Below is an interview I conducted with the computer scientist and Internet pioneer John Day via email over the last six months or so. The interview came about as a result of a chapter I’ve been working on for my “Other Networks” project, called “The Net Has Never Been Neutral.” ... Below you’ll see Day expand specifically on five flaws of the TCP /IP model that are still entrenched in our contemporary Internet architecture and, even more fascinating, the ways in which a more sensible structure (like the one proposed by the French CYCLADES group) to handle network congestion would have made the issue of net neutrality beside the point."
John-Day  Lori-Emerson  netneutrality  networking 
august 2015 by pierredv
Use OpenDNS
Via Windows Secrets, "help defend yourself from ransomware", April 2015
DNS  networking  security 
april 2015 by pierredv
facebook/augmented-traffic-control · GitHub
via Andreas Achtzehn, March 2013: "Facebook has today open-sourced a tool they use to simulate different mobile network connections, e.g. EDGE or congested 3G, to test user experience of their apps. Very interesting, could also be useful for future Wi-Fi congestion research, e.g. by allowing mapping user experience metrics to controlled network inhibitions. The tool runs on a standard Linux router, very nice."
github  networking  modeling  Facebook 
march 2015 by pierredv
The science of network performance - Martin Geddes Feb 2015
"This presentation shares some of the latest advances in network performance science. What are the problems with how people today measure, model and manage performance? What are the state of the art approaches? A case study from Kent Public Service Network will illustrate the scope for improvements in all network operators."
Martin-Geddes  networking  performance  slideshare 
march 2015 by pierredv
Rules for Successful Hotel Wi-Fi - WLAN Pros | WLAN Pros
"I just happen to be in a hotel with bad Wi-Fi and I thought to write up a quick ‘How to NOT’ do Hotel Wi-Fi using this facility as an example. But instead, this short post turned into a 3,500 word, 12-page article. In addition to posting the entire thing here – I’ll also post a simple link to a PDF of the full document."
Wi-Fi  networking  network-design  infrastructure  hotels 
september 2014 by pierredv
42nd St paradox: Cull the best to make things better - physics-math - 16 January 2014 - New Scientist
"According to the emerging science of networks, there are good reasons why some systems perform better in seemingly disadvantageous conditions." Dietrich Braess, late 60s: "while working on ways to find the optimal solution for traffic flow through a network of roads that he made a surprising discovery: adding an extra street to a simple network can actually increase overall travel times" Good road traffic example why Nash Equilibrium isn't optimal: "Suppose five drivers choose the 10-minute journey on the highway. The other five take the shorter route giving them a 5-minute commute. Now the average journey time is 7.5 minutes – the shortest possible average." Examples from other fields: basketball, electricity generation, wireless grids, food webs, metabolic pathways
Braess  Nash  nash.equilibrium  network  NewScientist  networking  network-analysis  traffic  disease  ** 
july 2014 by pierredv
Network performance optimisation using high-fidelity measures (slides)
slideshare deck, "Network performance optimisation using high-fidelity measures" scroll down for transcript
Martin-Geddes  networking  performance  congestion  loss  delay  broadband  QoE 
january 2014 by pierredv
Virtual Router - Wifi Hot Spot for Windows 7 / 2008 R2
Virtual Router is a free, open source software based router for PCs running Windows 8, Windows 7 or Windows Server 2008 R2. Using Virtual Router, users can wirelessly share any internet connection (Wifi, LAN, Cable Modem, Dial-up, Cellular, etc.) with any Wifi device (Laptop, Smart Phone, iPod Touch, iPhone, Android Phone, Zune, Netbook, wireless printer, etc.) These devices connect to Virtual Router just like any other access point, and the connection is completely secured using WPA2 (the most secure wireless encryption.)
networking  wireless  tools  windows7  Microsoft  windows2008  Wi-Fi  hotspot 
october 2013 by pierredv
Editorial: Can LTE Broadcast deliver TV/mobile convergence? Oct 2013
"An academic paper by Ericsson scientists argues LTE Broadcast could be used to replace DTT transmissions to standard TVs, offering huge benefits in spectrum efficiency. Their proposal takes the example of the US and says that if cellular towers are reused to create a single frequency network “it is possible to support TV services with 84 MHz of spectrum via LTE… in contrast to the 300 MHz used by today’s ATSC TV broadcast system.” Europe is on the verge of making the 700 MHz band not just a broadcasting band but a co-primary band for broadcasting and mobile. There is a Europe-wide consultation on this subject, France and Germany have already decided to do so and the UK is consulting on the same proposal. "
broadcasting  single  frequency  networking  (SFN)  600MHz  LTE  PolicyTracker  700MHz  TV 
october 2013 by pierredv
Google making the Web faster with protocol that reduces round trips | Ars Technica June 2013
"Roskind apparently goes by the title of "RTT Reduction Ranger" at Google, referring to "round trip time." Roskind wrote that round trip time, "which is ultimately bounded by the speed of light—is not decreasing, and will remain high on mobile networks for the foreseeable future." QUIC, he writes, "runs a stream multiplexing protocol over a new flavor of Transport Layer Security (TLS) on top of UDP instead of TCP. QUIC combines a carefully selected collection of techniques to reduce the number of round trips we need as we surf the Internet." An FAQ and an in-depth design document provide more information than most people would want to know about QUIC. Besides running multiplexed connections over UDP, QUIC was "designed to provide security protection equivalent to TLS/SSL, along with reduced connection and transport latency," the FAQ states."
networking  UDP  SPDY  QUIC  broadband  ArsTechnica  Google  internet  protocols  TCP 
july 2013 by pierredv
The DDoS That Almost Broke the Internet - CloudFlare blog
"The New York Times this morning published a story about the Spamhaus DDoS attack and how CloudFlare helped mitigate it and keep the site online. The Times calls the attack the largest known DDoS attack ever on the Internet. We wrote about the attack last week. At the time, it was a large attack, sending 85Gbps of traffic. Since then, the attack got much worse. Here are some of the technical details of what we've seen."
networking  DDOS  internet  cybersecurity  hacking 
march 2013 by pierredv
Breaking out the business case for software defined networking - FierceTelecom
"The SDN business case must necessarily emphasize operating rather than capital expense reduction"
survey  FierceTelecom  networking  operations  SDN  trends 
january 2013 by pierredv
Future of Comms - Our crisis of certainty
"I would like to make a radical, disturbing and controversial proposition. I believe the telecoms industry is going to face trouble ahead. This is not because of problems with packets or products per se, but because of a problem of philosophy: How can we know what we commonly believe about networks is actually true? In other words, we have an unfolding crisis of epistemology: the very nature of being certain about knowing things."
telecoms  Martin-Geddes  networking 
december 2012 by pierredv
"Do not complicate routing security with Voodoo Economics" = IGP Blog
"the introduction of RPKI dramatically changes the existing decentralized governance model by linking resource allocation and routing"
networking  via:cybertelecom  routing  internet  governance 
september 2011 by pierredv
The Lexicon of Networking Economics « Virulent Word of Mouse
teases apart different meanings of network, e.g. network of connected pieces vs. network of suppliers. "Not surprisingly, confusion arises because many of the markets in which network effects arise are also the markets in which the other meanings of network also arise."
semantics  networking  economics  virulentwordofmouse 
september 2011 by pierredv
Google, Microsoft Cheat On Slow-Start — Should You? - Slashdot
"Software developer and blogger Ben Strong did a little exploring to find out how Google achieves its admirably fast load times. What he discovered is that Google, and to a much greater extent Microsoft, are cheating on the 'slow-start' requirement of RFC-3390. His research indicates that discussion of this practice on the Net is at an early, and somewhat theoretical, stage. Strong concludes with this question: 'What should I do in my app (and what should you do in yours)? Join the arms race or sit on the sidelines and let Google have all the page-load glory?'"
norms  networking  google  programming  web  x:slashdot  via:tren 
august 2011 by pierredv
AllJoyn - Proximity-based peer-to-peer technology
"AllJoyn™ is a peer-to-peer technology that enables ad hoc, proximity-based, device-to-device communication without the use of an intermediary server"
Via Ranveer Chandra
qualcomm  p2p  networking  mobile 
may 2011 by pierredv
lightRadio: Evolve your wireless broadband network | Alcatel-Lucent
"lightRadio is a flexible architecture that distributes intelligence throughout the network so that it can dynamically expand to meet growing demands."
Heard via Krishnan Sabnani keynote at DySPAN 2011, May 2011 Aachen
"This is accomplished by creating a new architecture where the base station, typically located at the base of each cell tower, is broken into its component elements and distributed through the network or ‘carrier cloud.’ Additionally the various cell tower antennas are combined and shrunk into a single powerful, Bell Labs-pioneered multi frequency, multi standard (2G, 3G, LTE) device that can be mounted on poles, sides of buildings or anywhere else there is power and a broadband connection."
wireless  networking  broadband  alcatel 
may 2011 by pierredv
Windows Filtering Platform (Windows)
"With the WFP API, developers can implement firewalls, intrusion detection systems, antivirus programs, network monitoring tools, and parental controls. WFP integrates with and provides support for firewall features such as authenticated communication and dynamic firewall configuration based on applications' use of sockets API (application-based policy). WFP also provides infrastructure for IPsec policy management, change notifications, network diagnostics, and stateful filtering."
microsoft  windows  networking  security  via:windowssecrets 
january 2011 by pierredv
Pomp & Surkanstance: Microsoft: the bold, yet timid, giant
"Contrary to popular belief, Microsoft is an innovator. Unfortunately, many of those innovations are in areas that never matter in the grand scheme of things, or are undermined by a simultaneous streak of timidity that courses through the organization."
"Brute force innovation"
"Field of dreams... there are many significant technologies, and platforms, that are built into Microsoft’s products that are only ever used at the margins, and never see wide adoption"
"Microsoft’s entire IPSec strategy ignored the needs and wishes of key players in the networking space"
"Most of these problems were foreseeable early on, but institutional momentum, and a grand vision that is too compelling to die, has kept Microsoft plugging away at it for a decade."
"There are numerous grand initiatives [which] become orphans almost from the day they are released."
"in many cases Microsoft would be far better served if it was less innovative, and really dug into the hard work of incremental improvements."
stories  microsoft  innovation  networking  security  IPSec  ** 
august 2009 by pierredv
Ethernet: the final frontier? = Analysys Mason
analsysis of the history of and prognosis for Ethernet, particularly to support core carrier networks
networking  ethernet  mpls  AnalysysMason 
july 2009 by pierredv
Hack Attack: Turn your $60 router into a $600 router
Linksys WRT54GL Wireless router firmware upgrade
via ashepp on twitter
**  wireless  networking  hacking 
march 2009 by pierredv
Telstra Challenges SingTel to Build Australia Network (Update3) = Australia & New Zealand
"Telstra Corp., Australia's largest phone company, submitted a proposal to bid to build a nationwide high-speed Internet network, challenging the Terria group led by Singapore Telecommunications Ltd. and two others."
communications  networking  australia 
november 2008 by pierredv
The Internet's New Shortcut - P4P
Work by Krishnamurthy and Yang - P2P routing that uses local info
networking  p2p  technology  via:forbes 
august 2008 by pierredv
Cisco Seeks An Edge -
Cisco's view of edge computing - it's what happens at edge point controlled by the IAP, not the end user.
networking  internet  technology 
march 2008 by pierredv
The internet as a platform? Not as ISP bloodbath looms | The Register
"In only its first month of service, iPlayer pushed up ISP costs by 200 per cent, from 6.1p per user to 18.3p per user. This obliges ISPs who are simply BT resellers - and most are - to order more pipes; yet there's no extra income. "
internet  networking  commerce 
february 2008 by pierredv
deep packet inspection trade group
" is a user-driven online community focused on deep packet inspection and processing related topics"
networking  communication 
february 2008 by pierredv
Internet routing shows growing pains—again: Page 1
the limit is speed of looking up routing tables - tutorials on BGP and more
networking  internet  routing 
january 2008 by pierredv
IT, Networking, Telecom Books and Tools
dictionaries, charts, tables for TCP/IP, networking etc.
resources  networking 
june 2007 by pierredv | 10/23/2006 | Cisco's `worst-kept secret' - video conferencing solution
selling apps that drive companies to upgrade their networks - focus on video
Cisco  networking 
october 2006 by pierredv
Mountain View Coverage Map
"This map shows the location of Google WiFi nodes in Mountain View, CA. The map also shows the areas of the city where we are not yet able to provide coverage."
wireless  networking  community 
august 2006 by pierredv

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