Wednesday, 29 October 2014

Ebola crisis brings out another sickness: Vile scammers

Volunteers who will be sent to Africa in the forthcoming days are taught how to work with patients infected with the Ebola virus during a training session.

Credit: Reuters
Phishing, false advertising, cybercrap pervade as Ebola fraud grows

Sadly we all knew it would happen, once the Ebola situation became international news, the contemptible fraud and scam artists would crawl out from under their rocks to exploit it.

They have not disappointed.
New York State Attorney General Eric Schneiderman and others this week noted a number of scams in the works:

Consumer Reports published an article referencing a bogus e-mail solicitation offering a $29 “surplus protection kit” supposedly designed for emergency response teams and law enforcement agencies.

The Federal Trade Commission has warned that there are no FDA-approved medical treatments for Ebola and that consumers should file complaints with the FTC and the FDA if they encounter a fraud.

According to USA Today, at least three companies have been issued warnings by the Food and Drug Administration in the past month for selling bogus treatments, solutions, or therapies for Ebola. The FTC and FDA recently sent a warning letter to Natural Solutions Foundation, which sells supplements, putting it on notice that some of its claims around Ebola violate a number of federal laws.

According to a report in Daily Finance, the Better Business Bureau’s New York office has received complaints about fraudulent telephone solicitations involving a charity claiming to raise funds to help Ebola victims. There have also been reports of door-to-door frauds claiming to raise money for a Texas nurse who became infected with the disease.
Better Business Bureau is warning consumers about a variety of Ebola-related scams and problematic fundraisers that have emerged recently.
The AARP warned about online offers for an Ebola cure or special “natural” or “dietary” methods to alleviate or prevent symptoms; email scams with alarming messages like “Ebola update” or

“Ebola Pandemic” which may include links that release computer viruses; sales of “personal protection kits” at low prices to provide supposed “infection defense”; charity scams claiming to help victims or fight the disease; and potential stock investment frauds involving companies that say they are involved in the development of products that will prevent the spread of viral diseases like Ebola.

US-CERT reminded users to protect against email scams and cyber campaigns using the Ebola virus disease as a theme. Phishing emails may contain links that direct users to websites which collect personal information such as login credentials, or contain malicious attachments that can infect a system.

The FTC wrote that there are currently no FDA-approved vaccines or drugs to prevent or treat Ebola. “Although there are experimental Ebola vaccines and treatments under development, these are in the early stages of product development, have not yet been fully tested for safety or effectiveness, and the supply is very limited. There are no approved vaccines, drugs, or products specifically for Ebola available for purchase online or in stores. No dietary supplements can claim to prevent or cure Ebola, according to the supplements industry. If you’ve seen companies or products touting these claims, report them to the FTC and FDA.”


Best Microsoft MCTS Certification, Microsoft MCITP Training at certkingdom.com


Friday, 24 October 2014

Quality of Service explained: How routers with strong QoS make better home networks

The devices connected to your router battle for bandwidth like thirst-crazed beasts jostling for access to a receding watering hole. You can’t see the melee, but you can feel its impact. Without intervention, the strongest competitors—a BitTorrent download, for instance—will drink their fill, even if it’s not essential to their survival, while others—a VoIP call, a Netflix stream, or a YouTube video—are left to wither and die.

A router with good Quality of Service (QoS) technology can prevent such unequal distribution of a precious resource. You can dip only one straw into the Internet at a time, after all. QoS ensures that each client gets its chance for a sip, and it also takes each client’s specific needs into account. BitTorrent? Cool your jets. If one of your packets is dropped, it’ll be resent. You can run in the background. Netflix, VoIP, YouTube? Lag results in a bad user experience. Your data gets priority.

That’s a gross oversimplification, of course. Here’s a more in-depth explanation. QoS, also known as traffic shaping, assigns priority to each device and service operating on your network and controls the amount of bandwidth each is allowed to consume based on its mission. A file transfer, such as the aforementioned BitTorrent, is a fault-tolerant process. The client and the server exchange data to verify that all the bits are delivered. If any are lost in transit, they’ll be resent until the entire package has been delivered.

That can’t happen with a video or audio stream, a VoIP call, or an online gaming session. The client can’t ask the server to resend lost bits, because any interruption in the stream results in a glitch (or lag, in terms of game play). QoS recognizes the various types of traffic moving over your network and prioritizes it accordingly. File transfers will take longer while you’re watching a video or playing a game, but you'll be assured of a good user experience.
Traditional QoS

Different routers take different approaches to QoS. With some models, you simply identify the type of traffic you want to manage and then assign it a priority: High, medium, or low. With others, you can choose specific applications, or even identify the specific ports a service or application uses to reach the Internet. Yet another way is to assign priority to a specific device using its IP or MAC address.
Router Quality of Service QoS

Many older routers, such as this Netgear WNR2000 802.11n model, have predefined Quality of Service for a limited number of applications, but you must configure your own rules for anything the manufacturer didn’t think of.

Configuring QoS this way can be very cumbersome, requiring lots of knowledge of protocols, specific details about how your router operates, and networking in general. Some routers, for instance, depend on you to inform them of the maximum upload and download speeds your ISP supports. Enter the incorrect values, and your network might perform worse instead of better.

Fortunately, router manufacturers have made great strides in making QoS easier to configure. In some cases, it’s become entirely automatic.
Intelligent QoS

Some routers include the option of automated QoS handling. Most newer models support the Wi-Fi Multimedia (WMM) standard, for instance. WMM prioritizes network traffic in four categories, from highest to lowest: Voice, video, best effort (most traffic from apps other than voice and video), and background (print jobs, file downloads, and other traffic not sensitive to latency). WMM is good as far as it goes, but it ameliorates only wireless network contention. It does nothing to resolve the battle for bandwidth among wired network clients.

Better routers go further to cover both sides of the network. They automatically choose which traffic gets priority based upon assumptions—putting video and voice ahead of file downloads, for instance. The intelligence behind each vendor’s QoS functionality, however, varies according to the quality of the algorithm in use and the processor power available to run it.
Router Quality of Service QoS

Qualcomm's StreamBoost technolog enables the the D-Link DGL-5500 to display exactly what's consuming the majority of your network's bandwidth.

Right now, Qualcomm’s StreamBoost traffic-shaping technology seems to be the hot QoS ticket. StreamBoost, first announced in January, 2013, is based on technology originally developed by Bigfoot Networks. Bigfoot, a company that Qualcomm acquired in 2011, designed network-interface cards targeted at gamers, who are among the most latency-sensitive computer users in the world.

Qualcomm doesn’t manufacture routers, but the company does design and manufacture processors that go into high-end consumer routers such as Netgear’s Nighthawk X4 and D-Link’s DGL-5500 Gaming Router. While there’s no technological barrier to running StreamBoost on a Marvel or Broadcom processor, Qualcomm currently doesn’t license the firmware separate from its chips.

StreamBoost can distinguish between and prioritize latency-sensitive traffic (audio, video, gaming, and so on) over latency-insensitive traffic (downloads, file transfers, etc.), and it can adjust its allocation of bandwidth to various network activities to ensure all clients get a good experience. If several clients are streaming Netflix videos at the same time, for instance, it can automatically reduce one or more of those streams from 1080p quality to 720p quality to ensure all the sessions have enough bandwidth.

What’s more, StreamBoost can distinguish among the types of client devices and reduce the image quality streaming to a smartphone or tablet, because the degradation won’t be as noticeable on those small screens as it would be on a big-screen smart TV.
Router Quality of Service QoS

StreamBoost lets you assign priorities to client PCs, so you can preserve bandwidth for a smart TV at the expense of a PC used for BitTorrent downloads, for instance.

StreamBoost’s bandwidth graphs and tools provide better visibility and more precise tuning than other QoS tools I’ve seen. And if you opt in to participate, you’ll receive ongoing updates from Qualcomm’s database in the cloud so that your router can continually optimize its performance and learn how to handle new devices that come on the market. StreamBoost support alone won’t make a crappy router great, but it can make a difference.

Good Quality of Service is essential if you use your network to stream video, play online games, make VoIP and Skype calls, or watch YouTube (and if you don’t do any of those things, you wouldn’t have clicked on this story in the first place). The performance benefits you’ll realize might even save you from moving up to a pricier service tier with your ISP.

An 802.11ac router can deliver higher performance even with clients that are equipped with 802.11n adapters.
But there are other things you can do beyond traffic shaping. Perform a site survey using a tool such as Kismet to see which radio channels your neighbors are relying on, and configure your router to use something else. There are only three non-overlapping channels in the 2.4GHz frequency band: 1, 6, and 11. Use one of these if possible.

If you have a dual-band router that supports both the 2.4- and 5GHz frequency bands, use the less-crowded higher frequency for latency-sensitive traffic such as media streaming, and reserve 2.4GHz for things like downloads. There are many more non-overlapping channels at 5GHz, and the higher channels—150 and up—support more bandwidth than the lower channels.

Lastly, if you’re using an 802.11n (or older) router, consider moving up to a model based on the newer 802.11ac standard. Even if your clients are stuck with 802.11n adapters, you’ll still see a significant performance boost with an 802.11ac router.


Best Microsoft MCTS Certification, Microsoft MCP Training at certkingdom.com

Friday, 17 October 2014

OS X Yosemite: Macworld's complete guide to Apple's new feature-packed OS

Apple’s latest OS X version, Yosemite, is ready for download, but simply installing the system is only the first step in a very interesting journey. Apple has made significant changes across OS X, improving the Safari browser, Notifications Center, Spotlight searching, and even how the desktop finds synergy with iOS devices.

It’s a potentially daunting collection of tweaks and additions, but we’re here to make your Yosemite education as painless as possible. Please join the Macworld staff as we walk you through our Yosemite primers—and if you don’t find the article you want, please make some suggestions in the comments below.
First, make sure your Mac plays nice with Yosemite

If you’re already happily running Mavericks (Mac OS X 10.9) on your machine, you’re good for a Yosemite upgrade. But if you want more information on which specific Macs are compatible, check out this guide. Hint: Apple confirmed that you’ll need at least 2GB of RAM and 8GB of free storage for the installation.

Yes, even in this day and age, there are still best practices for installing a new Apple OS. Our “How to install Mac OS X Yosemite” primer will walk you through everything from simple nerd wisdom (like updating apps and cautionary back-ups) to different strategies for installation itself.

On Retina optimizations and other visual tweaks
Yosemite has been built from the ground up to support Retina displays like the one deployed on the new iMac. As such, the new OS is chock-full of new visual optimizations, including a new font, translucency effects, and interface tweaks that advance the OS X design language. We explain everything in this brief of what you’ll encounter in the Yosemite design.
All about the Handoff between Yosemite and iOS

At its Thursday event, Apple touted new Continuity features that foster graceful synergy between our desktop and mobile experiences. Key to the scheme is Handoff, a feature that lets you launch an app on one device (say, your Mac), and then “hand off” that activity to another device (your iPhone or iPad). It’s enabled in Mail, Messages, Maps and a host of other apps, and you can read all about how it works here.

Get to know the new Safari
More so than any other built-in app, the Safari browser has probably changed the most in the update from Mavericks to Yosemite. It’s a much cleaner (albeit sparser) experience, and you can read all about the changes in “Get to know the new, slimmed-down Safari.”

The new Notification Center is so dramatically different (and improved), we encouraged Apple to honor it with a new name. Notifications are now driven by individual interactive widgets, both from Apple itself and third-party developers. In our detailed walk-through of the new Notification Center, we also delve into the now-obsolete Dashboard interface.
Spotlight searching expands its repertoire

Spotlight started as a relatively simple system search tool. Today, in Yosemite, it’s a full-fledged Internet crawler that can not only rifle through your OS, but also the web, Wikipedia, news headlines, maps, Bing, the App Store, iTunes, and even movie show times. We discuss all the new Spotlight features here.

OK, they don’t pack the same levels of glitz and glamour as the tweaks listed above, but changes to Mail, Messages, and Calendar will certainly influence your Yosemite experience. You can read about new features like Mail Drop, Markup, and Soundbites here.


Comptia A+ Training, Comptia A+ certification

Best comptia A+ Training, Comptia A+ Certification at Certkingdom.com

Thursday, 9 October 2014

Why we live in an anti-tech age

Complex planning -- and true innovation -- is out of fashion, argues PayPal co-founder Peter Thiel

ORLANDO -- Though it seems as if we're surrounded by innovative products, services and technologies, there's a growing counter argument that we're living in a dismal era. Science is hated. Real technological progress has stalled. And what we call innovation today really isn't very innovative.

Peter Thiel, a co-founder of PayPal, billionaire investor and author, is among those challenging the notion of innovation and progress. Thiel, who earned undergraduate and law degrees at Stanford University, spoke at the Gartner Symposium/IT this week about why the march of progress seems to have stalled.

"We live in a financial, capitalistic age, we do not live in a scientific or technological age," said Thiel. "We live in a period were people generally dislike science and technology. Our culture dislikes it, our government dislikes it."

The easiest way to see "how hostile our society is to technology" is to look at Hollywood. Movies "all show technology that doesn't work, that ... kills people, that it is bad for the world," said Thiel.

Peter Thiel REUTERS/Yuri Gripas
Peter Thiel, entrepreneur and co-founder of PayPal.

He pointed to films like The Terminator, The Matrix, Avatar, Elysium and Gravity. The underlying message in Gravityis that "you never want to go into outer space," Thiel said.

The movie industry, he said, isn't to blame. It's simply reflecting and feeding a public bias against science.
Gartner 2014

Technology has a much different meaning today than it did in the 1950s or 1960s. During that period, it meant computers and rockets, underwater cities, new forms of energy and all sorts of supersonic airplanes. Since then, there "has been this narrowing" view that technology is mostly information technology, he said.

While advances today may be enough to dramatically improve business efficiencies and create great new companies, "it's not clear it's always enough to take our civilization to the next level," said Thiel.

His argument parallels one raised by the economist Robert Gordon, who in a 2012 paper for the National Bureau of Economic Research (download PDF), said there is an absence of the type of innovation that advances civilization in fundamental ways. True innovation is something like air conditioning, the combustion engine or the telephone.

In the last decade, argued Gordon, attention "has focused not on labor-saving innovation, but rather on a succession of entertainment and communication devices that do the same things as we could do before, but now in smaller and more convenient packages."

The problem may be partly the result of the process used to develop new technologies.

From Thiel's perspective, what's "sorely lacking is any sort of conviction. If you have conviction around getting certain things done, a very short list of things, that's how you really push for progress," whether in a corporation or government.

Using the government as an example, Thiel pointed to the Manhattan project, which built a nuclear bomb in 3.5 years, and the moon landing in the 1960s. "It was not a spray and pray approach," said Thiel of those government efforts, "it was complex coordination around a well-defined plan, which is very out of fashion."

Among those at the Gartner conference who heard Thiel talk was David Hanaman, co-founder and chief sales and marketing officer of C3i Inc., an IT services firm for life sciences. He said the analysis resonated.

"We've come out with a lot of cool technology, and it has made first-world lives maybe a little more superficially fun, but it hasn't fundamentally changed the human condition," said Hanaman.

Regarding the cultural aspects, Hanaman said that Thiel was probably also being critical about the way science is treated in policy arguments.

In environmental issues such as climate change, both sides will take the science that fits their opinion, said Hanaman, "as opposed to the more traditionally scientific way which is to really interpret the data on its merits."

Best Microsoft MCTS Certification, Microsoft MCITP Training at certkingdom.com

Friday, 3 October 2014

7 killer open source monitoring tools

Network and system monitoring is a broad category. There are solutions that monitor for the proper operation of servers, network gear, and applications, and there are solutions that track the performance of those systems and devices, providing trending and analysis. Some tools will sound alarms and notifications when problems are detected, while others will even trigger actions to run when alarms sound. Here is a collection of open source solutions that aim to provide some or all of these capabilities.

Cacti
Cacti is a very extensive performance graphing and trending tool that can be used to track just about any monitored metric that can be plotted on a graph. From disk utilization to fan speeds in a power supply, if it can be monitored, Cacti can track it -- and make that data quickly available.

Nagios
Nagios is the old guard of system and network monitoring. It is fast, reliable, and extremely customizable. Nagios can be a challenge for newcomers, but the rather complex configuration is also its strength, as it can be adapted to just about any monitoring task. What it may lack in looks it makes up for in power and reliability.

Icinga
Icinga is an offshoot of Nagios that is currently being rebuilt anew. It offers a thorough monitoring and alerting framework that’s designed to be as open and extensible as Nagios is, but with several different Web UI options. Icinga 1 is closely related to Nagios, while Icinga 2 is the rewrite. Both versions are currently supported, and Nagios users can migrate to Icinga 1 very easily.

NeDi
NeDi may not be as well known as some of the others, but it’s a great solution for tracking devices across a network. It continuously walks through a network infrastructure and catalogs devices, keeping track of everything it discovers. It can provide the current location of any device, as well as a history.

NeDi can be used to locate stolen or lost devices by alerting you if they reappear on the network. It can even display all known and discovered connections on a map, showing how every network interconnect is laid out, down to the physical port level.

Observium
Observium combines system and network monitoring with performance trending. It uses both static and auto discovery to identify servers and network devices, leverages a variety of monitoring methods, and can be configured to track just about any available metric. The Web UI is very clean, well thought out, and easy to navigate.

As shown, Observium can also display the physical location of monitored devices on a geographical map. Note too the heads-up panels showing active alarms and device counts.

Zabbix
Zabbix monitors servers and networks with an extensive array of tools. There are Zabbix agents for most operating systems, or you can use passive or external checks, including SNMP to monitor hosts and network devices. You'll also find extensive alerting and notification facilities, and a highly customizable Web UI that can be adapted to a variety of heads-up displays. In addition, Zabbix has specific tools that monitor Web application stacks and virtualization hypervisors.

Zabbix can also produce logical interconnection diagrams detailing how certain monitored objects are interconnected. These maps are customizable, and maps can be created for groups of monitored devices and hosts.

Ntop
Ntop is a packet sniffing tool with a slick Web UI that displays live data on network traffic passing by a monitoring interface. Instant data on network flows is available through an advanced live graphing function. Host data flows and host communication pair information is also available in real-time.

Best Microsoft MCTS Certification, Microsoft MCITP Training at certkingdom.com