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Category Archives for "Networking"

HPE offers an escape from the aging HP-UX OS via containers

Hewlett Packard Enterprises' HP-UX OS has been around for more than 30 years, and users may be looking to move on from the Unix-based OS.Now HPE is offering a way out of the ancient OS using containers, which are small buckets running instances of applications. The containers will be offered with the Linux OS.HPE will provide containers to transition from conventional mainframe-style OSes to new hardware like x86-based Xeon servers. In this case, HPE is trying to get users to transition from Itanium chips.Intel started shipping its last Itanium 9700 chips -- codenamed Kittson -- on Thursday. Correspondingly, HPE announced new Integrity i6 servers with the new chips. But the future of HP-UX servers is uncertain because Intel has no new Itanium chips beyond Kittson.To read this article in full or to leave a comment, please click here

Bringing Internet to Venezuela’s Remote Regions – While Setting a World Record

My interest in networking began during my time as a professor and head of the telecommunications lab at the University of Los Andes, in Merída, Venezuela, where we began experimenting with computer networks. I was one of the earliest Internet enthusiasts at our university.  Our university was the first in Venezuela to get direct access to the Internet backbone in Homestead, Florida, by means of an antenna on the roof of our lab with the satellite modem in my office.

Ermanno Pietrosemoli

The Google Cloud Platform won’t box you in

Sam Ramji, who joined Google about six months ago as VP of Product Management for Google Cloud Platform (GCP), has deep roots in open source:  He was the founding CEO of Cloud Foundry Foundation and he designed and led Microsoft's open source strategy.  Network World Editor in Chief John Dix sat down with Ramji at the recent Red Hat Summit in Boston to discuss how Google is trying to differentiate its cloud service. Google Sam Ramji, VP of Product Management for Google Cloud Platform (GCP)To read this article in full or to leave a comment, please click here

Twenty years after Deep Blue, what can AI do for us?

On May 11, 1997, a computer showed that it could outclass a human in that most human of pursuits: playing a game. The human was World Chess Champion Garry Kasparov, and the computer was IBM's Deep Blue, which had begun life at Carnegie Mellon University as a system called ChipTest.One of Deep Blue's creators, Murray Campbell, talked to the IDG News Service about the other things computers have learned to do as well as, or better than, humans, and what that means for our future. What follows is an edited version of that conversation.IDGNS: Is it true that you and Deep Blue joined IBM at the same time?To read this article in full or to leave a comment, please click here

Preparing for the Juniper Networks Certified Design Associate (JNCDA) Exam

Recently I set my sights on Juniper Networks‘ Design track as I am working with customers on an almost daily basis with regards to Data Center design. As such the Juniper Network Design – Data Center curriculum and associated JNCDS-DC certification looked very appealing. To top that off, according to Certification Magazine, the JNCDA and the JNCDS-DC certifications …

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Some HP PCs are recording your keystrokes

Nearly thirty different Hewlett-Packard Windows PC models may be recording every keystroke their owners make and storing them in a human-readable file accessible to any user on the PC. Oh, boy.Switzerland-based security company Modzero recently discovered a keylogger present in an audio program in HP PCs called MicTray. Modzero reported it on their blog early Thursday morning.You can also find a complete list of affected HP PC models in the company's security advisory. Affected models include PCs from the HP Elitebook 800 series, HP ProBook 600 and 400 series', the EliteBook Folio G1, and others. The program has existed on HP PCs since at least late 2015, Modzero says.To read this article in full or to leave a comment, please click here

Some HP PCs are recording your keystrokes

Nearly thirty different Hewlett-Packard Windows PC models may be recording every keystroke their owners make and storing them in a human-readable file accessible to any user on the PC. Oh, boy.Switzerland-based security company Modzero recently discovered a keylogger present in an audio program in HP PCs called MicTray. Modzero reported it on their blog early Thursday morning.You can also find a complete list of affected HP PC models in the company's security advisory. Affected models include PCs from the HP Elitebook 800 series, HP ProBook 600 and 400 series', the EliteBook Folio G1, and others. The program has existed on HP PCs since at least late 2015, Modzero says.To read this article in full or to leave a comment, please click here

Puppet zeroes in on containers, cloud workloads

Devops platform provider Puppet has introduced its Puppet Cloud Discovery service for learning what, exactly, users have running in the cloud and their impact.As Puppet's first foray into SaaS, the service offers visibility into cloud workloads, providing the same type of introspection as the on-premise Puppet Enterprise platform. For example, it can tell users if they might have vulnerabilities because they're running an outdated version of OpenSSL, or it could inform users which virtual machines need to migrated when moving from Windows Server 2012 to 2016.[ Download the Deep Dive: Monitoring in the age of devops. | Get a digest of the day's top tech stories in the InfoWorld Daily newsletter. ] Cloud Discovery will debut in a preview form on the Amazon Web Services cloud later this month; plans call for it to eventually be supported on other cloud platforms as well.To read this article in full or to leave a comment, please click here

Why digital disruption leaves no room for bimodal IT

Saying bimodal IT is dead may be a tad premature. But as digital disruption continues to sweep across sectors -- driven by companies such as Amazon.com, Uber and Airbnb -- two-speed IT is beginning to look and feel antiquated. Some CIOs and consultants argue that the operating model hinders innovation at a time when companies must accelerate their digital initiatives.Introduced by Gartner in 2014, bimodal IT splits technology departments into two groups: a stable mode (Mode 1) where the bulk of technology is carefully cultivated and refined and a second mode (Mode 2) that espouses experimentation, free-thinking and agility. Forking IT into separate tracks made sense a few years ago, as many CIOs worked to plug gaps in talent, process and technology, Forrester Research analyst Matthew Guarini tells CIO.com.To read this article in full or to leave a comment, please click here

Latest firmware updates for Asus routers fix CSRF security flaws

Users of Asus RT-N and RT-AC series routers should install the latest firmware updates released for their models because they address vulnerabilities that could allow attackers to hijack router settings.The flaws were discovered by researchers from security consultancy outfit Nightwatch Cybersecurity and leave many Asus router models exposed to cross-site request forgery (CSRF) attacks.CSRF is an attack technique that involves hijacking a user's browser when visiting a specially crafted website and forcing it to send unauthorized requests to a different website -- or in this case, the router web-based administration interface accessible over the local area network (LAN).To read this article in full or to leave a comment, please click here

Latest firmware updates for Asus routers fix CSRF security flaws

Users of Asus RT-N and RT-AC series routers should install the latest firmware updates released for their models because they address vulnerabilities that could allow attackers to hijack router settings.The flaws were discovered by researchers from security consultancy outfit Nightwatch Cybersecurity and leave many Asus router models exposed to cross-site request forgery (CSRF) attacks.CSRF is an attack technique that involves hijacking a user's browser when visiting a specially crafted website and forcing it to send unauthorized requests to a different website -- or in this case, the router web-based administration interface accessible over the local area network (LAN).To read this article in full or to leave a comment, please click here

Worth Reading: Digital advertising takes a hit

But how effectively does that information work to meet advertiser goals? As advertisers including P&G, which spends billions of dollars each year on all its advertising for brands including Crest, Old Spice, and Gillette, have tried to assess the effectiveness of their increasing digital ad budgets, they’ve discovered that hyper-targeting consumers doesn’t always work. —Technology Review

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State of the WAN: 50% of WAN traffic is in the cloud

This week, SD-WAN vendor Aryaka released its “2017 State of the WAN Report,” which summarizes a global study conducted by the vendor that looks at WAN trends across a number of verticals and across every region of the globe for 2016.The study was conducted by aggregating data from Aryaka’s customer base. The global SD-WAN vendor has analyzed connectivity to and from over 5,000 locations around the world across more than 550 enterprise organizations. The network data was rolled up and analyzed to see what’s happening on the enterprise WAN.RELATED: SD-WAN: What it is and why you will use it one day Aryaka also provided a comparison with last year’s data set, which provides insight into how things have changed over the past 12 months.To read this article in full or to leave a comment, please click here

State of the WAN: 50% of WAN traffic is in the cloud

This week, SD-WAN vendor Aryaka released its “2017 State of the WAN Report,” which summarizes a global study conducted by the vendor that looks at WAN trends across a number of verticals and across every region of the globe for 2016.The study was conducted by aggregating data from Aryaka’s customer base. The global SD-WAN vendor has analyzed connectivity to and from over 5,000 locations around the world across more than 550 enterprise organizations. The network data was rolled up and analyzed to see what’s happening on the enterprise WAN.RELATED: SD-WAN: What it is and why you will use it one day Aryaka also provided a comparison with last year’s data set, which provides insight into how things have changed over the past 12 months.To read this article in full or to leave a comment, please click here

CCNA Wireless – CCNA Wireless Notes Chapter 1

I’ve started studying for the CCNA wireless exam and thought I would put my notes online. I always learn better when writing and hopefully my notes can be of assistance to someone else. These notes are based on reading the official certification guide “CCNA Wireless 200-355 Official Cert Guide“.

Basic wireless theory

Wireless LANs are based on the 802.11 standard.

Wireless LANs is a lot about Radio Frequency (RF) and planning of the RF environment.

When alternating current is sent through the antenna electric and magnetic fields propagate out and away as traveling waves. They travel along each other and are at right angles to each other.

Electromagnetic waves do not travel in a straight line. They travel by expanding in all directions away from the antenna.

When the electromagnetic waves reach the receiver’s antenna, they induce an electrical signal.

Frequency

Frequency – The number of times a signal makes one complete up and down cycle in one second. Measured in Hertz (Hz)

The frequency range from 3 kHz to 300 GHz is commonly called RF. Types of devices in this frequency range is radar, radio, shortwave radio, television, FM radio, microwave etc. The main two frequency Continue reading

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