Tag Archive for Networking

IPv6 Compromise Smartphones Users’ Privacy

IPv6 Compromise Smartphones Users' PrivacyNow that the IPv4 address pool is depleted and the IPocalypse is at hand, wrinkles are emerging in IPv6.  One of the wrinkles is with mobile devices. Most of the cool mobiles devices have been able to handle IPv6 for a while. Apple’s (AAPL) iPhones, iPads, and iPods have been capable of handling IPv6 Since version 4 of the iOS operating system and most Google (GOOG) Android devices have been capable since version 2.1. H  Security is reporting that these mobile operating systems send information about their users to the network.

Smartphone risksA device on an IPv6 network usually determines half of their address (the “interface identifier”) themselves, but H Security says that smartphones are sloppy with this task. According to the article, smartphones simply add the same two bytes to their globally unique MAC address and use it as their identifier. As a result, they transfer a unique hardware ID whenever they communicate with an IPv6-enabled server.

The basic problem isn’t an IPv6 issue because there are other methods for generating the address. The article says that a device can generate a random interface identifier and replace it on a regular basis. This is called the Privacy Extensions method and is the factory-set option in Windows; it can also be enabled in other operating systems. The article points out that devices running Apple’s iOS or Android offer neither the option to enable Privacy Extensions nor the option to disable IPv6, anyone who uses an affected device on an IPv6-enabled wireless network will send their ID.

IPocalypseThe only thing the smartphones are lacking is a control option in the user interface, as the Privacy Extensions do come as part of their kernel. For instance, on a (jailbroken) iOS 4 device with root access, they can be enabled with the same command that enables them on a desktop device running Mac OS X:

sysctl -w net.inet6.ip6.use_tempaddr=1

The blog claims the problem is only affecting a small number of users because IPv6 is not yet in widespread use. However, more ISPs plan to offer IPv6 in addition to the old IPv4 in the future. In addition, there are routers like the Cisco (CSCO) Linksys E3000, which will automatically set up an IPv6 connection via a 6to4 conversion when their internet access is purely IPv4.

The author concludes that the issue is particularly sensitive because such devices tend to be used by one specific person. As a result, the MAC address, which is accessible to any server operator and network monitor, allows this user to be identified.

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If this sounds familiar, it is I wrote about mobile apps uploading  UDID’s here.

Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedIn, Facebook, and Twitter. Email the Bach Seat here.

Power Over Ethernet 802.3at

Power Over Ethernet 802.3atA client recently asked what happened to the network design rule of thumb which said do not install data cables anywhere near electrical cables? The fear of cross-talk, interference, and corruption of the data traffic seems to have disappeared with power over Ethernet. He rightly pointed out that now it seems OK to mix data and power in the same cable going to a networked device. Power over Ethernet (PoE) is similar in principle to the way that the copper wire pair that carries your POTS (Plain Old Telephone System) telephone signals into your house also carries enough electricity (48v DC) from the telco Central Office to power the phone’s core elements of the headset, dial, and ringer. The latest PoE standard is 802.3at.

See part 1 here.

can cut installation costsPoE end devices (PD) became popular with the bean-counters because these devices can cut installation costs by as much as 90% over traditional powering techniques. With cost savings comes demands for new products however, the power limitation of 802.3af  prevented full support of  “high power” devices via the industry-standard PoE. In September 2005, the IEEE launched a task force to begin reviewing new PoE specifications to enhance the IEEE 802.3af guidelines into a next-generation standard.

The IEEE ratified the new PoE standard in 2009 called IEEE 802.3at-2009 PoE standard (aka PoE+ or PoE plus). Under the new standard Power Sourcing Equipment (PSE) must provide at least 30.0 Watts at the PSE port and 25.5 watts continuous power to up to 100 meters from the PSE over Cat5e or better cable to each PD. This will allow PoE to address applications such as multi-radio wireless APs, Pan-Tilt-Zoom (PTZ) gimbal-mounted cameras, 802.16 subscriber stations, 3G/LTE femtocells, perimeter security equipment, videoconferencing products, thin clients, and even some notebooks, as well as emerging applications. The new standard also provides full backward compatibility and interoperability to existing 802.3af compliant PSE’s and PD’s.

802.11n Wi-Fi technologyThe widespread use of 802.11n Wi-Fi technology has been one of 802.3at’s drivers. The multiple-input/multiple-output (MIMO) architecture used by 802.11n technology requires more power than earlier technologies, like 802.11a and 802.11b/g.

Installation practices and cable type impact the ability to use PoE+ to power a PD. Installation practices are outside the scope of the IEEE 802.3at standard. The Telecommunications Industry Association (TIA) has addressed these issues in a Telecommunications Systems Bulletin (TSB). TSB-184, Guidelines for Supporting Power Delivery Over Balanced Twisted-Pair Cabling describes how the impact of environmental conditions of the installed cabling and heat dissipation profiles of the cables’ effect the telecommunications cabling capacity to support the PoE+ application.

But Wait There’s More

IEEE logoOne of the most important benefits of the IEEE 802.3at standard is it incorporates existing 802.3af PoE safety requirements. The new standard includes compliance detection features for safe powering as well as safe PD disconnection in overload, short-circuit or under-load conditions enabling fast and safe adoption of the new standard.

The definition of a powered device changed under the IEEE 802.3at-2009 standard. The new standard considers the PD to be the powered interface, as opposed to the entire device being powered. This means that one device can have two power interfaces, each taking 25.5W, inside the same box. Nothing precludes these to be connected—one over the two pairs using lines 1, 2, 3, and 6 and the other over the two pairs using lines 4, 5, 7, and 8. This is what makes it possible to double the standard 802.3at-2009 maximum of 25W and go up to 51W while fully complying with the standard. Applications that need 51W PoE are an exterior IP camera with a heater or an access control system that includes a controller, a reader, and a few door locks which can easily consume 45W of power or more.

POE PTZ cameraAnother way PoE system developers are addressing the growing device powering requirements is by employing the option in the IEEE standard to add PoE functionality over all four pairs of the Ethernet cable. This option opens the door for safely delivering 60 watts of direct current (DC) power over a single Ethernet cable, using current levels of 600 milliamps (mA) than the 1.2 Amp level of two-pair 60W midspans.

The manufacturers claim this configuration can cut power consumption by 15% compared to two-pair solutions. This could translate into savings of about $25 per year per powered device, assuming energy costs of $0.10 per kilowatt-hour.

Related articles
  • IEEE Introduces Groundbreaking Standard for Body Area Networking (sys-con.com)

 

Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

Holey Optochip Transfers TBPS Using Light

Holey Optochip Transfers TBPS Using LightIBM scientists will report on a prototype optical chipset, dubbed “Holey Optochip.” It is the first parallel optical transceiver to transfer one trillion bits – one terabit – of information per second. IBM will present the new chip at the 2012 Optical Fiber Communication Conference, conference for optical communications and networking professionals.

IBM old logoThe Holey Optochip is a standard silicon CMOS chip with holes punched in it. According to ITnewsLink, it was not possible to transport terabits of data for existing parallel optical communications technology until now. Reportedly the new IBM (IBM) chip prototype will deliver ultra-high interconnect bandwidth. The new compact chip will efficiently enable bandwidth to facilitate growth. Some of the segments it is targeted at are big data and cloud computing and next-generation data center applications.

Big Blue speculates that the chip could move information eight times faster than today’s systems. Speeds that fast could transform how data is accessed, shared, and used. It could open a new era of communications, computing, and entertainment. “Reaching the one trillion bit per second mark with the Holey Optochip marks IBM’s latest milestone to develop chip-scale transceivers that can handle the volume of traffic in the era of big data,” said IBM Researcher Clint Schow, part of the team that built the prototype.

Holey OptochipThe holes in Holey Optochip allow light through the chip. They produce an ultra-compact, high-performing, and power-efficient optical module. It is capable of record-setting data transfer rates.  ITnewsLink says optical networking can significantly improve data transfer rates by speeding the flow of data using light pulses, instead of sending electrons over wires. Researchers have searched for ways to make use of optical signals widespread within standard low-cost, high-volume chip manufacturing. The Holey Optochip module is constructed with commercially available components, providing the possibility to manufacture at economies of scale.

We have been actively pursuing higher levels of integration, power efficiency, and performance for all the optical components through packaging and circuit innovations. We aim to improve on the technology for commercialization in the next decade with the collaboration of manufacturing partners,” Mr. Schow said in a press release.

Greem light bulbThe Holey Optochip is green

The Holey Optochip achieves its speed while consuming less than five watts. IBM claims the power consumed by a 100W light bulb could power 20 transceivers. This progress in power-efficient interconnects will allow companies who adopt high-performance computing to manage their energy load while performing powerful applications such as analytics, data modeling, and forecasting.

Technical Aspects of the Holey Optochip

The article explains that parallel optics is a fiber optic technology. It is primarily targeted at high-data, short-reach multimode fiber systems that are typically less than 150 meters. Parallel optics differ from traditional duplex fiber optic serial communication.  In parallel optics, data is simultaneously transmitted and received over multiple optical fibers.

Holey Optochip with optical viasA single 90-nanometer IBM CMOS transceiver IC becomes a Holey Optochip with the fabrication of forty-eight through-silicon holes, or “optical vias.” There is one optical via for each transmitter and receiver channel. Simple post-processing on completed CMOS wafers with all devices and standard wiring levels results in an entire wafer populated with Holey Optochips. The transceiver chip measures only 5.2 mm x 5.8 mm. Twenty-four channel, industry-standard 850-nm VCSEL (vertical cavity surface emitting laser) and photodiode arrays are directly flip-chip soldered to the Optochip. This direct packaging produces high-performance, chip-scale optical engines. The Holey Optochips are designed for direct coupling to a standard 48-channel multi-mode fiber array through an efficient microlens optical system that can be assembled with conventional high-volume packaging tools.

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This one does not count as a new speed record – yet. It’s not real. Once Big Blue demonstrates Holey Optochip in the real world like this and this then it probably will be the fastest toy in town. The raw speed of one transceiver is equal to the bandwidth consumed by 100,000 users at today’s typical 10 Mb/s high-speed internet access.

At one terabit per second, IBM’s Holey Optochip will offer unprecedented amounts of bandwidth to move data like machine-to-machine communications (M2M) and other Internet of Things (IoT) components as well as posts to social media sites like Facebook (FB) and Twitter, videos to YouTube and digital pictures to Pinterest.

Mad scientistBut wait what if we use WDM within the light going thru Optochip.

Or better yet QAM 16 or even QAM 64

Or even more betterer QAM 256 running inside each wavelength of WDM.

 

Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

DT Does 512 Gbps Data Transmission

DT Does 512 Gbps Data TransmissionDeutsche Telekom set a new data transmission speed record. They set the record by pumping 512 Gigabits per second over 456 miles. DT used a single 100 GHz wavelength channel over optical fiber according to at GigaOm. The Berlin-based T-Labs OSIRIS (Optically Supported IP Router Interfaces) research project sent 512 Gbps down each channel of a production network from Berlin to Hannover and back again. The usable data rate was 400 Gbps, overhead takes up the rest.

What is DWDMSince each fiber strand can carry up to 48 wavelengths in the case of the T-Labs system. T-Labs’ new tech should mean a staggering 24.6 Tbps (terabytes per second) max throughput for each optical fiber. “When using all of the channels of an optical fiber … the new process permits a throughput of up to 24.6 Tbit/s (24,600,000,000,000 bit/s) to be attained on the maximum of 48 available channels,”  T-Labs Manager Heinrich Arnold told TechWeek Europe. GigaOm says that “a collection of 3,696 CDs could thus be transferred over a single optical fiber at the same time” using the new technique.

T-Labs says existing networks don’t need cable replacements to take advantage of the new speeds The firm achieved the new bandwidth record by using new technologies developed with Alcatel-Lucent (ALU). The new AlcaLu gear was installed in the terminal stations at either end of the fiber.

QAM 16The BBC says that much of the speed gain came through improvements to the software used for forward error correction (FEC). TechWeek Europe says DT also used other creative transmission technologies. They used two carrier frequencies, two polarization planes, 16-QAM quadrature amplitude modulation. “You can imagine it as squeezing and tilting the entire set-up around to get more capacity out,” Mr. Arnold told the BBC.

But there are still an awful lot of copper-based networks in existence, The high value of copper makes copper-based networks vulnerable to copper theft. Also, despite advances in Copper such as ADSL2+ and VDSL2 (which I wrote about here and here) fiber is a much more “future proof” material.

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Ronnie Reagan thumbs up for high speed data

Ronnie thumbs up for high-speed data

Do the screaming hot network happy dance, the usable per-channel bit-rate is 400 Gbps, 4x the maximum bit-rate in today’s 100 Gbps per channel state-of-the-art networks, which is a huge capacity boost. This is more than double the 186 Gbps record set by researchers in the US and Canada last year (Which I wrote about here). This tech will most likely be deployed by the Telco’s and Cableco’s who need to support an FTTx strategy, it’s gonna be a long time until these speeds reach most enterprises.

Related articles

 

Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

The Connected Home

Help – My Thermostat is Calling China!

The Connected HomePhil Neray of Q1 Labs, an IBM (IBM) company posted that in the recent Chinese hack of the U.S. Chamber of Commerce’s network. One attack vector was a thermostat. The thermostat at a Chamber townhouse on Capitol Hill was communicating with an Internet address in China. At the same time, a printer spontaneously started printing pages with Chinese characters (rb- I wrote about securing printers here).

The blog says that the hackers were in the network for more than a year before being detected is not unusual. He cites the 2011 Data Breach Investigations Report, more than 60% of breaches remain undiscovered for months or longer (versus days or weeks).

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This is one of the risks of the Internet of Things. Security is in the era of IoT will have to use machines to monitor the machines.

CIA Chief: We’ll Spy on You Through Your Dishwasher

CIA Chief: We'll Spy on You Through Your Dishwasher Spencer Ackerman at Wired points out that more personal and household devices are connecting to the internet. They are no part of the Internet of Things. \U.S.CIA Director General David Petraeus cannot wait to use your appliances to spy on you through them.

General Petraeus recently spoke about the “Internet of Things” at a summit for In-Q-Tel, the CIA’s venture capital firm. “‘Transformational’ is an overused word, but I do believe it properly applies to these technologies particularly to their effect on clandestine tradecraft” the blog recounts.

Mr. Ackerman predicts that people will be sending tagged, geolocated data that a spy agency can intercept in real-time. This will happen when they open their Sears (SHLD) Craftsman garage door with an app on an Apple (AAPL) iPhone. “Items of interest will be located, identified, monitored, and remotely controlled through technologies such as radio-frequency identification, sensor networks, tiny embedded servers, and energy harvesters — all connected to the next-generation internet using abundant, low-cost, and high-power computing.” Petraeus said, “the latter now going to cloud computing, in many areas greater and greater supercomputing, and, ultimately, heading to quantum computing.”

Wired says the CIA has a lot of legal restrictions against spying on American citizens. But collecting ambient geolocation data from devices is a grayer area. This espcially ture especially after the 2008 carve-outs to the Foreign Intelligence Surveillance Act. Hardware manufacturers, it turns out, store a trove of geolocation data; and some legislators have grown alarmed at how easy it is for the government to track you through your Apple iPhone or Sony (SNE) PlayStation.

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The implications of the “Internet of Things” are profound when linked to the transformational nature of the connected home network. The CIA sees great opportunities in wired home devices. Any home gadget with RFID, sensor networks, embedded servers, or energy harvesters is ripe for interception by spy agencies.

Koubachi Wi-Fi Plant Sensor Gives Your Plant a Voice

Koubachi Wi-Fi Plant Sensor Gives Your Plant a Voiceat CeBIT 2012 in Hannover Koubachi, the Swiss start-up company behind the popular iPhone plant care assistant presented its newest innovation. It is called the Koubachi Wi-Fi Plant Sensor according to ITnewsLink. Building on the success of its popular interactive plant care assistant, the sensor integrates into the Koubachi system to literally gives your plant a voice.

The Wi-Fi Plant Sensor measures soil moisture, light intensity, and temperature. Using Wi-Fi, the data is sent to the Koubachi cloud. There it is analyzed by the Koubachi Plant Care Engine. The plant owner gets detailed care instructions on watering, fertilizing, misting, temperature and light through push notifications or email. “The Koubachi Wi-Fi Plant Sensor is the first device ever that enables real-time monitoring of the plant’s vitality,” says Philipp Bolliger, CEO of Koubachi. “It’s a truly unique product in the field of “Internet of Things” and bringing state-of-the-art technology to plant care.

Smart Gadgets are Like Sleeper Cells in Your Kitchen

Smart Gadgets are Like Sleeper Cells in Your KitchenManufacturers are “future-proofing” their appliances with “Internet of Things” capabilities that are latent for now. Christopher Mims at MIT’s Technology Review asserts that major appliances bought in the last three years probably contain a Zigbee capable wireless radio. The radio can send out information about a device’s status and energy use and receive commands that alter its behavior.

Many appliance makers don’t announce these capabilities. Mr. Mims interviewed Mike Beyerle, an engineer at GE (GE) about GE‘s Nucleus home energy management system. “We want to build up a base before we make a big deal out of it,” says Mr. Beyerle.

The author says that manufacturers aren’t telling consumers what their devices are capable of. They are reluctant to do so in part because the abilities are useless without an energy management hub like GE’s Nucleus or a utility company‘s smart meter. In both cases, smart appliances must be “bound” to a hub to communicate with the outside world.

Once a device is hooked up to an energy management system and becomes part of the IoT, it gets interesting. Mr. Mims says that users who signed up for a “demand response” program with their utility to get a lower bill, enable the utility to control their appliances. For example, a refrigerator’s icemaker’s defrost cycle or the elements in a clothes dryer can be manipulated to drive down power use during times of peak demand.

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Most people do not realize that installing a new smart meter can activate a technological sleeper cell in their HDTV, kitchen, or laundry room. All of these “smart” devices will be part of the “Internet of Things.” They will have an IP address (probably an IPv6 address) and will be broadcast via a Zigbee wireless network. This is why the CIA says it can spy on people through their dishwasher.

Connected Kitchen

Connected KitchenEngadget says the Samsung RF3289 fridge is designed to let users access Pandora or tweet while grabbing a snack. Samsung touts it as the first to feature integrated WiFi. The Wi-Fi also offers the ability to view Google calendars, check the weather, download recipes from Epicurious, or leave digital notes

Engadet also reports LG’s Thinq line of connected appliances includes vacuum, oven, refrigerator, and washer/dryer. They support Wi-Fi and ZigBee to communicate with each other, the smart meter, smartphones, and tablets.  That’s a pretty strong foundation to build the Internet of Things especially if the home is already equipped with ZigBee devices. CNET says the line can be troubleshot remotely; tech support can log in to the device see what’s wrong and fix it. Kenmore has a similar product line.

 

Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.