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Category Archives for "Networking"

Raspberry Pi, ultrasonics, and music

My son is a musician and he’s mentioned several times that he’d like to get an instrument called a  theremin. If you haven’t encountered this instrument before, it consists of an antenna that the theraminist (yes, that is a real word) waves their hand around. The device responds with a musical tone that’s dependent on how close the theraminist’s hand is to the antenna. How does it actually work? According to Wikipedia: The theremin uses the heterodyne principle to generate an audio signal. The instrument's pitch circuitry includes two radio frequency oscillators set below 500 kHz to minimize radio interference. One oscillator operates at a fixed frequency. The frequency of the other oscillator is almost identical, and is controlled by the performer's distance from the pitch control antenna. /  The performer's hand acts as the grounded plate (the performer's body being the connection to ground) of a variable capacitor in an L-C (inductance-capacitance) circuit, which is part of the oscillator and determines its frequency.To read this article in full or to leave a comment, please click here

Why IT service providers are investing in North America

IT service providers set up more new IT delivery centers in North America than anywhere else in the world last year, according to new research.North American locations accounted for more the one-third of new delivery sites (29 out of a total of 76) established by service providers in 2016, according to a report from IT and business sourcing consultancy and research firm Everest Group.The need to be close to U.S. customers coupled with the increased use of automation to control costs is making North America a more attractive option for service delivery, says Everest Group.[ Related: IT service providers increase investment in onshore locations ] The demand for digital transformation related technologies specifically is driving interest in certain metropolitan areas. The share of digital services being delivered in new service provider set-ups has been steadily increasing from approximately 25 percent in 2012 to 63 percent in 2016. “This percentage is expected to continue to remain high as service providers focus on expanding and broadening their digital capabilities,” says Everest Group Vice President Salil Dani.To read this article in full or to leave a comment, please click here

The modern guide to staying safe online

The internet can be a scary place. Threats come in many forms, lurking in practically any corner. Worse, yesterday’s prevailing advice for staying safe online -- avoid dodgy websites, don’t traffic in stolen or illegal goods, interact only with people you know -- no longer holds. Phishing emails from supposed family members, spyware piggybacking on legitimate apps, well-known sites hijacked with malicious code -- digital safety clearly needs new rules to meet today's evolving threatscape.Considering how much of our digital lives occurs online -- communications, financial transactions, entertainment, work, education, to name a few -- adopting even a few safe browsing practices can lead to broad benefits. And this includes how we deal with email messages as well, given how popular email is as a delivery mechanism for online attacks using exploit kits and malware.To read this article in full or to leave a comment, please click here

The modern guide to staying safe online

The internet can be a scary place. Threats come in many forms, lurking in practically any corner. Worse, yesterday’s prevailing advice for staying safe online -- avoid dodgy websites, don’t traffic in stolen or illegal goods, interact only with people you know -- no longer holds. Phishing emails from supposed family members, spyware piggybacking on legitimate apps, well-known sites hijacked with malicious code -- digital safety clearly needs new rules to meet today's evolving threatscape.Considering how much of our digital lives occurs online -- communications, financial transactions, entertainment, work, education, to name a few -- adopting even a few safe browsing practices can lead to broad benefits. And this includes how we deal with email messages as well, given how popular email is as a delivery mechanism for online attacks using exploit kits and malware.To read this article in full or to leave a comment, please click here

Apple reportedly working on watch-based glucose monitor

According to reports, Apple has some big plans in store for the Apple Watch. Hardly a surprise, since the company seems intent on positioning its increasingly popular wearable as a health-oriented device.Just a few months ago, word emerged that Apple has been busy hiring a slew of researchers, biomedical engineers and scientists who are working on coming up with a way for diabetics to non-invasively measure their glucose levels. Of course, the challenges Apple faces in making this a reality are immense. Indeed, many biotech companies have been trying to solve this same problem for decades, albeit unsuccessfully.Recently, word surfaced via CNBC that Apple CEO Tim Cook is already test-driving a device capable of tracking his blood sugar.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Use wired networks for Gigabit, not Wi-Fi

Thousand megabit broadband is a turning point for internet delivery speeds. Newer tech, such as virtual reality, and the incumbents, such as video streaming, will benefit. Right now, though, only about 17 percent of the U.S.’s population has access to those super-fast speeds, which are primarily delivered by fiber, according to Viavi Solution’s latest Gigabit Monitor report.Although Gigabit is kicking in, it’s not going to be particularly simple to implement at the networking level, internet metrics company Ookla said earlier this month. Upgraded, wired installs will likely handle the throughput better than existing, now commonly used Wi-Fi, among other things, the company said.To read this article in full or to leave a comment, please click here

Use wired networks for Gigabit, not Wi-Fi

Thousand megabit broadband is a turning point for internet delivery speeds. Newer tech, such as virtual reality, and the incumbents, such as video streaming, will benefit. Right now, though, only about 17 percent of the U.S.’s population has access to those super-fast speeds, which are primarily delivered by fiber, according to Viavi Solution’s latest Gigabit Monitor report.Although Gigabit is kicking in, it’s not going to be particularly simple to implement at the networking level, internet metrics company Ookla said earlier this month. Upgraded, wired installs will likely handle the throughput better than existing, now commonly used Wi-Fi, among other things, the company said.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Use wired networks for Gigabit, not Wi-Fi

Thousand megabit broadband is a turning point for internet delivery speeds. Newer tech, such as virtual reality, and the incumbents, such as video streaming, will benefit. Right now, though, only about 17 percent of the U.S.’s population has access to those super-fast speeds, which are primarily delivered by fiber, according to Viavi Solution’s latest Gigabit Monitor report.Although Gigabit is kicking in, it’s not going to be particularly simple to implement at the networking level, internet metrics company Ookla said earlier this month. Upgraded, wired installs will likely handle the throughput better than existing, now commonly used Wi-Fi, among other things, the company said.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Use wired networks for Gigabit, not Wi-Fi

Thousand megabit broadband is a turning point for internet delivery speeds. Newer tech, such as virtual reality, and the incumbents, such as video streaming, will benefit. Right now, though, only about 17 percent of the U.S.’s population has access to those super-fast speeds, which are primarily delivered by fiber, according to Viavi Solution’s latest Gigabit Monitor report.Although Gigabit is kicking in, it’s not going to be particularly simple to implement at the networking level, internet metrics company Ookla said earlier this month. Upgraded, wired installs will likely handle the throughput better than existing, now commonly used Wi-Fi, among other things, the company said.To read this article in full or to leave a comment, please click here

Use wired networks for Gigabit, not Wi-Fi

Thousand megabit broadband is a turning point for internet delivery speeds. Newer tech, such as virtual reality, and the incumbents, such as video streaming, will benefit. Right now, though, only about 17 percent of the U.S.’s population has access to those super-fast speeds, which are primarily delivered by fiber, according to Viavi Solution’s latest Gigabit Monitor report.Although Gigabit is kicking in, it’s not going to be particularly simple to implement at the networking level, internet metrics company Ookla said earlier this month. Upgraded, wired installs will likely handle the throughput better than existing, now commonly used Wi-Fi, among other things, the company said.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Are VMs more secure than containers?

We often say, “HTTPS is secure,” or “HTTP is not secure.” But what we mean is that “HTTPS is hard to snoop and makes man-in-the-middle attacks difficult” or “my grandmother has no trouble snooping HTTP.”Nevertheless, HTTPS has been hacked, and under some circumstances, HTTP is secure enough. Furthermore, if I discover an exploitable defect in a common implementation supporting HTTPS (think OpenSSL and Heartbleed), HTTPS can become a hacking gateway until the implementation is corrected.HTTP and HTTPS are protocols defined in IETF RFCs 7230-7237 and 2828. HTTPS was designed as a secure HTTP, but saying HTTPS is secure and HTTP is not still hides important exceptions.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Are VMs more secure than containers?

We often say, “HTTPS is secure,” or “HTTP is not secure.” But what we mean is that “HTTPS is hard to snoop and makes man-in-the-middle attacks difficult” or “my grandmother has no trouble snooping HTTP.”Nevertheless, HTTPS has been hacked, and under some circumstances, HTTP is secure enough. Furthermore, if I discover an exploitable defect in a common implementation supporting HTTPS (think OpenSSL and Heartbleed), HTTPS can become a hacking gateway until the implementation is corrected.HTTP and HTTPS are protocols defined in IETF RFCs 7230-7237 and 2828. HTTPS was designed as a secure HTTP, but saying HTTPS is secure and HTTP is not still hides important exceptions.To read this article in full or to leave a comment, please click here

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