Common Networking Protocols in LAN, WAN and Datacenter

Spanning Tree, Link Aggregation , VLAN and First Hop Redundancy protocols are used in Campus, Service Provider Access and Aggregation and in the Datacenter environment. There are definitely other protocols which are common across the Places in the Networks but in order to keep this article short and meaningful I choose these four. I will… Read More »

The post Common Networking Protocols in LAN, WAN and Datacenter appeared first on Network Design and Architecture.

China-based hackers used Microsoft’s TechNet for attacks

Microsoft has taken steps to stop a China-based hacking group from using its TechNet website as part of its attack infrastructure, according to security vendor FireEye.The group, which FireEye calls APT (advanced persistent threat) 17, is well-known for attacks against defense contractors, law firms, U.S. government agencies and technology and mining companies.TechNet is highly trafficked website that has technical documentation for Microsoft products. It also has a large forum, where users can leave comments and ask questions.APT17—nicknamed DeputyDog—created accounts on TechNet and then left comments on certain pages. Those comments contained the name of an encoded domain, which computers infected by the group’s malware were instructed to contact.To read this article in full or to leave a comment, please click here

VCDX-NV Interview: Nemtallah Daher Discusses VMware NSX Certification

Nemtallah Daher is Senior Network Delivery Consultant at the consulting firm AdvizeX Technology. Recently he took some time out of his day to talk with us about why, as a networking guy, he thinks learning about network virtualization is critical to further one’s career. 

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I’ve been at AdvizeX for about a year now. I do Cisco, HP, data center stuff, and all sorts of general networking things: routing, switching, data center, UCS. That kind of stuff. Before coming to AdvizeX, I was a senior network specialist at Cleveland State University for about 20 years.

I started at Cleveland State in 1988 as a systems programmer, working on IBM mainframe doing CICS, COBOL and assembler. About 2 years after I started at Cleveland State, networking was becoming prevalent, and the project I was working on was coming to an end, so they asked me if I would help start a networking group. So from a small lab here, a building here, a floor there, I built the network at Cleveland State. We applied for a grant to get some hardware, applied for an IP address, domain name, all these things. There was nothing at the time, so we Continue reading

Review: 7 Android apps that track your expenses

Traveling these days is a hassle, no matter why you're going, or where -- and the necessity to track your expenses along the way just adds to the irritation. A good app, though, can make things a lot easier -- not only during the trip but afterwards, when you have to report it all to your (or your company's) accountant.The following seven Android apps have been created to help users track and report on their expenses. Some are strictly for business purposes; others can be used for both personal and work finance tracking. All of these have been updated within the last six months and have earned a rating of at least 4 out of 5 stars on Google Play by at least 100 users.To read this article in full or to leave a comment, please click here

The Upload: Your tech news briefing for Thursday, May 14

U.S. House votes to end NSA bulk data collectionThe dragnet collection of U.S. phone records by the National Security Agency exposed by former NSA contractor Edward Snowden nearly two years ago is finally on its way to being a relic of history. The U.S. House of Representatives voted 338 to 88 in favor of a bill that prohibits the practice. However, the USA Freedom Act does extend an expiring provision in the anti-terrorism Patriot Act that allows the NSA to collect U.S. telephone and business records, but with a more limited scope.To read this article in full or to leave a comment, please click here

The Upload: Your tech news briefing for Thursday, May 14

U.S. House votes to end NSA bulk data collectionThe dragnet collection of U.S. phone records by the National Security Agency exposed by former NSA contractor Edward Snowden nearly two years ago is finally on its way to being a relic of history. The U.S. House of Representatives voted 338 to 88 in favor of a bill that prohibits the practice. However, the USA Freedom Act does extend an expiring provision in the anti-terrorism Patriot Act that allows the NSA to collect U.S. telephone and business records, but with a more limited scope.To read this article in full or to leave a comment, please click here

Validating and searching JSON

When it comes to dealing with network automation, you can find yourself battling with many things, including dealing with XML and JSON data structures as you build apps that consume or spit out data.

Recently I’ve been using ‘jq’ to provide my JSON validation (i.e. I’ve not missed a quotation, colon, comma, curly or square bracket) when building data in JSON. Its primary function and purpose is to search through JSON data to find something in the data set, or reduce the data set to an area of focus, thus also validating your application is generating what it should be generating! A ‘lightweight and flexible command line JSON processor’ if you take the website description which is here: http://stedolan.githib.io/jq/

So how do you use this jq?

Here’s a simple JSON example with an ‘error’.

{
	"name":"App1",
	"OS":["Linux", "Windows", "Solaris", "OSX"],
	"Author":"David Gee",
	"Email":"[email protected]",
	"Twitter":"@davidjohngee"
	"Version":"alpha-v0.1",
	"IP_Address":"192.0.2.1:5000"
}

Using ‘jq’ I can not only validate the structure, but in the case of a script, I can also parse out the key/value I need. But first, let’s see where our error is.

$ jq '.' tst.json 
parse error: Expected separator between  Continue reading

Japan’s Alsok to launch warning system for unwelcome drones

Burglar alarms could soon incorporate drone-detection technology if a new service from a Japanese security company is anything to judge by.Tokyo-based Sohgo Security Services, also known as Alsok, plans to introduce a system that can detect incoming drones by listening for the signature hum of their rotors.The service could be aimed at government entities, corporations and key facilities such as nuclear power plants as a terrorism countermeasure. Other potential users are people or groups in the public eye who want to ward off the prying eyes of unmanned aerial vehicles.Alsok’s move follows an incident last month when a quadcopter with trace amounts of radiation was found on the roof of the Japanese prime minister’s office, apparently a protest of the government’s nuclear energy policy.To read this article in full or to leave a comment, please click here

Alibaba won’t last without expanding globally, new CEO says

After taking over the reins, Alibaba Group’s new CEO has made global expansion a top priority for the Chinese e-commerce giant.Alibaba will heavily invest in “new and existing overseas operations,” said Daniel Zhang in a speech on Wednesday to employees, an excerpt of which was posted on the group’s website.Zhang, 43, was the company’s chief operating officer until he replaced CEO Jonathan Lu last week, as the group said it was looking to tap new younger talent.To read this article in full or to leave a comment, please click here

Alibaba won’t last without expanding globally, new CEO says

After taking over the reins, Alibaba Group’s new CEO has made global expansion a top priority for the Chinese e-commerce giant.Alibaba will heavily invest in “new and existing overseas operations,” said Daniel Zhang in a speech on Wednesday to employees, an excerpt of which was posted on the group’s website.Zhang, 43, was the company’s chief operating officer until he replaced CEO Jonathan Lu last week, as the group said it was looking to tap new younger talent.To read this article in full or to leave a comment, please click here

Google tightens restrictions on Chrome extensions

Google will require most extensions for its Chrome browser to be installed from its Web Store, a move intended to stop users from inadvertently installing malicious ones.Google has gradually been changing its policy around extensions to prevent abuse. Last year, it mandated that all Chrome extensions for Windows be hosted in its store, wrote Jake Leichtling, an extensions platform product manager.The change caused a 75 percent drop in requests from customers asking how to uninstall unwanted extensions, he wrote. It did not apply to the Windows developer channel, but hackers are now using that in order to install extensions, he wrote. Starting Wednesday, all extensions for Windows will have to be hosted in the store, and the same will apply to OS X in July.To read this article in full or to leave a comment, please click here

A feisty John Chambers bows out on his final Cisco earnings call

John Chambers got a little feisty and a little sentimental in his last earnings call as Cisco’s CEO on Wednesday, dismissing a criticism of the company as “garbage” and saying he hopes to be working half time by the fall because “the hunting season’s coming up.”“It’s been fun, it’s been challenging, and I’m very humbled by having this chance for 20 years,” he said.Cisco said last week that Chambers will be replaced as CEO in July by Chuck Robbins. He’ll stay on as executive chairman of the board.“Let me first say very crisply: Chuck is the CEO. Period. He’ll make the decisions,” Chambers said. He’ll be an advisor to Robbins and be involved “where he wants me to be.”To read this article in full or to leave a comment, please click here

CloudFlare Supports the Passage of the USA Freedom Act

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Earlier today, the lower house in the U.S. Congress (the House of Representatives) passed the USA FREEDOM Act. The Act, if passed by the Senate and signed by the President, would seek to sunset the National Security Agency’s bulk collection and mass surveillance programs, which may or may not be authorized by Section 215 of the PATRIOT Act. Under this authority the U.S. government has established its broad surveillance programs to indiscriminately collect information. Other governments have followed this lead to create additional surveillance capabilities—most recently, the French Parliament has moved a bill that would allow broad surveillance powers with little judicial oversight.

Restricting routine bulk collection is important: it’s not the government’s job to collect everything that passes over the Internet. The new version of the USA FREEDOM Act keeps useful authorities but ends bulk collection of private data under the PATRIOT Act. It also increases the transparency of the secret FISA court, which reviews surveillance programs—a key start to understanding and fixing broken policies around surveillance. The Act would also allow companies to be more transparent in their reporting related to FISA orders.

To be clear, we continue to be supportive of law enforcement and work Continue reading

House votes to narrow NSA’s phone records collection

The U.S. House of Representatives has voted to rein in the National Security Agency’s bulk collection of the country’s telephone records, while allowing the agency to engage in more targeted surveillance.The House voted 338-88 late Wednesday to approve the USA Freedom Act, a bill intended to end the NSA’s mass collection of telephone metadata within the U.S. But the bill would extend an expiring provision in the anti-terrorism Patriot Act that allows the NSA to collect U.S. telephone and business records, but with a more limited scope.To read this article in full or to leave a comment, please click here

House votes to narrow NSA’s phone records collection

The U.S. House of Representatives has voted to rein in the National Security Agency’s bulk collection of the country’s telephone records, while allowing the agency to engage in more targeted surveillance.The House voted 338-88 late Wednesday to approve the USA Freedom Act, a bill intended to end the NSA’s mass collection of telephone metadata within the U.S. But the bill would extend an expiring provision in the anti-terrorism Patriot Act that allows the NSA to collect U.S. telephone and business records, but with a more limited scope.To read this article in full or to leave a comment, please click here

NSA: ad hominem is stil a fallacy

An ad hominem attack is where, instead of refuting a person's arguments, you attack their character. It's a fallacy that enlightened people avoid. I point this out because of a The Intercept piece about how some of NSA's defenders have financial ties to the NSA. This is a fallacy.


The first rule of NSA club is don't talk about NSA club. The intelligence community frequently publishes rules to this effect to all their employees, contractors, and anybody else under their thumb. They don't want their people talking about the NSA, even in defense. Their preferred defense is lobbying politicians privately in back rooms. They hate having things out in the public. Or, when they do want something public, they want to control the messaging (they are control freaks). They don't want their supporters muddying the waters with conflicting messaging, even if it is all positive. What they fear most is bad supporters, the type that does more harm than good. Inevitably, some defender of the NSA is going to say "ragheads must die", and that'll be the one thing attackers will cherry pick to smear the NSA's reputation.

Thus, you can tell how close somebody is to the NSA by Continue reading
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