Counting things, a lot of different things…

Back in April we announced Rate Limiting of requests for every Cloudflare customer. Being able to rate limit at the edge of the network has many advantages: it’s easier for customers to set up and operate, their origin servers are not bothered by excessive traffic or layer 7 attacks, the performance and memory cost of rate limiting is offloaded to the edge, and more.

In a nutshell, rate limiting works like this:

• Customers can define one or more rate limit rules that match particular HTTP requests (failed login attempts, expensive API calls, etc.)

• Every request that matches the rule is counted per client IP address

• Once that counter exceeds a threshold, further requests are not allowed to reach the origin server and an error page is returned to the client instead

This is a simple yet effective protection against brute force attacks on login pages and other sorts of abusive traffic like L7 DoS attacks.

Doing this with possibly millions of domains and even more millions of rules immediately becomes a bit more complicated. This article is a look at how we implemented a rate limiter able to run quickly and accurately at the edge of the network which Continue reading

Calculating Hyperconvergence Costs

Watch Out for A/B Testing Pitfalls

Survey says: Enterprise IT needs a Zoloft and a life coach

For the past seven years, I’ve conducted Uptime Institute’s Annual Data Center Industry Survey (over 1,000 end user respondents from around the globe, conducted by email).Every year, some trend jumps out as the main theme. Maybe it’s because I’m turning 40 this year, but my takeaway from 2017 is that enterprise data center professionals need to relax—and reevaluate what’s important to their organizations.Over the course of the survey, I’ve watched our respondents wrestle with uncertainties as the IT profession continues to evolve. But the data from this year’s survey illustrates that many of the industry’s concerns are not coming to pass, meanwhile chronic management problems go untended.To read this article in full or to leave a comment, please click here

Survey says: Enterprise IT needs a Zoloft and a life coach

For the past seven years, I’ve conducted Uptime Institute’s Annual Data Center Industry Survey (over 1,000 end user respondents from around the globe, conducted by email).Every year, some trend jumps out as the main theme. Maybe it’s because I’m turning 40 this year, but my takeaway from 2017 is that enterprise data center professionals need to relax—and reevaluate what’s important to their organizations.Over the course of the survey, I’ve watched our respondents wrestle with uncertainties as the IT profession continues to evolve. But the data from this year’s survey illustrates that many of the industry’s concerns are not coming to pass, meanwhile chronic management problems go untended.To read this article in full or to leave a comment, please click here

Episode 5 – All You Ever Wanted To Know About EIGRP

In episode 5 the Network Collective panel dives deep into the inner-workings of EIGRP and how to tune the protocol to work best for you. This isn’t your run of the mill EIGRP training session though, so buckle up and dig in to learn a lot about a protocol which appears pretty straight forward on the surface.

On another note… If you like the technical and community aspects of Network Collective, we wanted to tell you about a podcast that our friends over at Gestalt IT have just started up that you’ll probably enjoy as well.  The name of their podcast is the On-Premise IT Roundtable and in addition to networking they will be covering topics like system architecture, storage, big data, virtualization, hyper-converged, and a slew of other topics.  You should check them out.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

Russ White

Guest

Nicholas Russo

Guest

Jordan Martin

Co-Host

Eyvonne Sharp

Co-Host

Phil Gervasi

Co-Host

Audio Only Podcast Feed:

The post Episode 5 – All You Ever Wanted To Know About EIGRP appeared first on Network Collective.

Episode 5 – All You Ever Wanted To Know About EIGRP

In episode 5 the Network Collective panel dives deep into the inner-workings of EIGRP and how to tune the protocol to work best for you. This isn’t your run of the mill EIGRP training session though, so buckle up and dig in to learn a lot about a protocol which appears pretty straight forward on the surface.

On another note… If you like the technical and community aspects of Network Collective, we wanted to tell you about a podcast that our friends over at Gestalt IT have just started up that you’ll probably enjoy as well.  The name of their podcast is the On-Premise IT Roundtable and in addition to networking they will be covering topics like system architecture, storage, big data, virtualization, hyper-converged, and a slew of other topics.  You should check them out.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

Russ White

Guest

Nicholas Russo

Guest

Jordan Martin

Co-Host

Eyvonne Sharp

Co-Host

Phil Gervasi

Co-Host

Audio Only Podcast Feed:

The post Episode 5 – All You Ever Wanted To Know About EIGRP appeared first on Network Collective.

Mingis on Tech: The alphabet soup of mobile device management

Do you know your MDM from MAM and EMM? It's all about BYOD, and how companies can keep data safe while making it easier for workers to be productive with their own devices.

Leaf-and-Spine Fabrics: Implicit or Explicit Complexity?

During Shawn Zandi’s presentation describing large-scale leaf-and-spine fabrics I got into an interesting conversation with an attendee that claimed it might be simpler to replace parts of a large fabric with large chassis switches (largest boxes offered by multiple vendors support up to 576 40GE or even 100GE ports).

As always, you have to decide between implicit and explicit complexity.

The First Question in Cybersecurity

Cybersecurity professionals know that security cannot be a bolt on process or technology. Likewise, I also believe that that the thought of including the security team is rarely  goes far enough. To be effective, security should be ingrained and it should be pervasive. With a this commitment, there is at least one primary question that every organization should be asking in regards to Cybersecurity. That question is simply “Why?”

Not only should this question be asked organizationally, it should also be asked by individuals that are assuming security related roles within an organization. Some would think that the answer is simple or obvious. In many cases it is, but the complete answer WILL differ from organization to organization and differ based on the type of organization. What is important is that the organization itself agree upon the answer to this question.

Relevant answers to the Why question might be any or all of the following:

Governance—Specific regulatory requirements that the organization is required to meet. When these exist, they are often considered a top priority and a baseline requirement to transact business.

Cost/Expense—This could be direct and/or indirect. A direct example would be the typical scenario that occurs with ransomeware. Continue reading

What about other leaked printed documents?

Scanner quality

Microwave

Two interesting things I saw when listening to the output from my microwave:

1. The frequency is not stable. I assume it’s not thermally controlled.
2. Probably not a good idea to use WiFi channel 6, being 2.437GHz+-11MHz and all.

Near the microwave

Some rooms away from the microwave

Separate measurement some rooms away.

How to generate the graphs

# Edit usrp_spectrum_sense.py so that it prints time.time() instead of datetime.now()
./usrp_spectrum_sense.py --dwell-delay=0.1 -A RX2 -s 8000000 --real-time 2.4e9 2.5e9 > near-microwave.txt
# Edit near-microwave to remove the stupid verbose messages from the top.
cat > microwave.plot << EOF
set view map
set size ratio .9

set object 1 rect from graph 0, graph 0 to graph 1, graph 1 back
set object 1 rect fc rgb "black" fillstyle solid 1.0

set xlabel 'Time in seconds'
set ylabel 'Frequency'
set zlabel 'dB'
set terminal epslatex color
set output "near-microwave.eps"
splot 'near-microwave.txt' using ($1-1496693552.11):((($5/1000-2400000)/1000)):4 with points pointtype 5 pointsize 3 palette linewidth 30 title 'Signal'
EOF
gnuplot microwave.plot
convert near-microwave.{eps,png}

I can’t have GNUPlot output PNG directly because it hangs.

The magic value 1496693552.11 is the first timestamp in the file.

When No One Can Make Money In Systems

Making money in the information technology market has always been a challenge, but it keeps getting increasingly difficult as the tumultuous change in how companies consume compute, storage, and networking rips through all aspects of this $3 trillion market.

It is tough to know exactly what do to, and we see companies chasing the hot new things, doing acquisitions to bolster their positions, and selling off legacy businesses to generate the cash to do the deals and to keep Wall Street at bay. Companies like IBM, Dell, HPE, and Lenovo have sold things off and bought other things to try …

When No One Can Make Money In Systems was written by Timothy Prickett Morgan at The Next Platform.

50% off SanDisk Extreme PRO 128GB USB 3.0 Flash Drive, Speeds Up To 260MB/s – Deal Alert

The SanDisk Extreme PRO USB 3.0 Flash Drive features a sizable 128GB of storage, and read speeds of up to 260MB/s lets you easily transfer a full-length movie in seconds. The sophisticated design and durable aluminum metal casing help to protect against every day wear and tear on the outside, while the included SanDisk SecureAccess software provides 128-bit AES file encryption and password protection on the inside for your private files. The SanDisk Extreme PRO USB 3.0 Flash Drive is backed with a lifetime limited warranty. It currently averages 4.6 out of 5 stars on Amazon from over 550 people (80% rate the full 5 stars: see reviews here), and its typical list price has been reduced a generous 54% to just $64.99. See this deal on Amazon.To read this article in full or to leave a comment, please click here

What Extreme’s string of networking acquisitions means for enterprises

Extreme Network’s recent string of acquisitions – including it’s recent $100 million auction-buy of Avaya’s networking business, it’s purchase of Brocade’s Ethernet IP networking assets and its purchase of wireless vendor Zebra Technologies last year – should cause enterprise end users to potentially rethink their network infrastructure buying decisions when it comes time for their next hardware refresh, according to Forrester analyst Andre Kindness.Kindness says in the immediate short term, there are not likely to be any major changes to offerings from these vendors; all current Avaya and Brocade networking gear will still be supported. But given Extreme’s acquisition spree, it’s expected there will be some consolidation and blending of products over the medium and long-term. “As with anything, it will take some time to reconcile the moves and figure out the new direction,” says Kindness.To read this article in full or to leave a comment, please click here

What Extreme’s string of networking acquisitions means for enterprises

Extreme Network’s recent string of acquisitions – including it’s recent $100 million auction-buy of Avaya’s networking business, it’s purchase of Brocade’s Ethernet IP networking assets and its purchase of wireless vendor Zebra Technologies last year – should cause enterprise end users to potentially rethink their network infrastructure buying decisions when it comes time for their next hardware refresh, according to Forrester analyst Andre Kindness.Kindness says in the immediate short term, there are not likely to be any major changes to offerings from these vendors; all current Avaya and Brocade networking gear will still be supported. But given Extreme’s acquisition spree, it’s expected there will be some consolidation and blending of products over the medium and long-term. “As with anything, it will take some time to reconcile the moves and figure out the new direction,” says Kindness.To read this article in full or to leave a comment, please click here

What Extreme’s string of networking acquisitions means for enterprises

Extreme Network’s recent string of acquisitions – including it’s recent $100 million auction-buy of Avaya’s networking business, it’s purchase of Brocade’s Ethernet IP networking assets and its purchase of wireless vendor Zebra Technologies last year – should cause enterprise end users to potentially rethink their network infrastructure buying decisions when it comes time for their next hardware refresh, according to Forrester analyst Andre Kindness.Kindness says in the immediate short term, there are not likely to be any major changes to offerings from these vendors; all current Avaya and Brocade networking gear will still be supported. But given Extreme’s acquisition spree, it’s expected there will be some consolidation and blending of products over the medium and long-term. “As with anything, it will take some time to reconcile the moves and figure out the new direction,” says Kindness.To read this article in full or to leave a comment, please click here

Florida wants to be a major host of data center facilities

Welcome to the relaunch of my blog. We are undergoing a slight change in direction here at Network World, and with it a change in direction for this blog. Instead of covering Microsoft issues, I will be focused on data center issues, a change I am looking forward to because I love all things big iron. So, on to the show.-----------------------------------------------The state of Florida is not the first place you think of when it comes to tech. IBM had that legendary Boca Raton facility, and there are a few firms here and there, but it pales in comparison to California, Oregon, Washington and Texas.The state is looking to change that in a unique way. Instead of luring tech firms, it’s looking to lure data centers. The state legislature has passed, and Governor Rick Scott has signed, legislation for sales tax exemptions for large data center projects. The law goes into effect July 1, 2017.To read this article in full or to leave a comment, please click here

Florida wants to be a major host of data center facilities

Welcome to the relaunch of my blog. We are undergoing a slight change in direction here at Network World, and with it a change in direction for this blog. Instead of covering Microsoft issues, I will be focused on data center issues, a change I am looking forward to because I love all things big iron. So, on to the show.-----------------------------------------------The state of Florida is not the first place you think of when it comes to tech. IBM had that legendary Boca Raton facility, and there are a few firms here and there, but it pales in comparison to California, Oregon, Washington and Texas.The state is looking to change that in a unique way. Instead of luring tech firms, it’s looking to lure data centers. The state legislature has passed, and Governor Rick Scott has signed, legislation for sales tax exemptions for large data center projects. The law goes into effect July 1, 2017.To read this article in full or to leave a comment, please click here

OneLogin and Password Managers

An interesting incident this last week brings password managers back to the front of the pile—

OneLogin, an online service that lets users manage logins to sites and apps from a single platform, says it has suffered a security breach in which customer data was compromised, including the ability to decrypt encrypted data. —Krebs on Security

I used to use LastPass, but moved off of their product/service when LogMeIn bought them—my previous encounters with LogMeIn have all been negative, and I have no intention of using their service again in any form. During that move, I decided it was important to make another decision about the tradeoff between an online (cloud based) password manager, or one that keeps information in a local file. The key problem with cloud based services of this kind are they paint a huge target onto your passwords. The counter argument is that such cloud based services are more likely to protect your passwords than you are, because they focus their time and energy on doing so.

First lesson: moving to a cloud based application does not mean moving to a situation where the cloud provider actually knows what you are storing, nor how to access Continue reading