I hate card networks.
Visa and MasterCard are a pair of companies that I feel definitely make the world a worse place to live in, due to the fact that they sit in front of a critical part of how modern society wo
When it comes to troubleshooting, everyone talks about the power of the command tcpdump — after all, “the wire never lies.” But to really use it, you need to put in some time to understand the options. Let us save you some time and give you a quick overview of this powerful tool. You’ll be troubleshooting like a pro in no time!
For those unfamiliar with this powerful command, tcpdump is a packet analyzer that prints out a description of packets being transmitted or received over a network. Each line of output represents a packet. Every line includes a time stamp printed as hours, minutes, seconds, and fractions of a second since midnight. It will also show you packets dropped, packets received by the filter (which can vary depending on your OS) and packets dropped by kernel. Essentially, tcpdump does exactly what its name implies — it “dumps” all the information you need about the content of packets in the CLI so you can analyze it for yourself.
So, why is this so important for troubleshooting? Think of it this way. When box isn’t acting right, seeing what you are getting Continue reading
It’s first version of python app where we have number of devices loopback0 ip address stored in device.txt file.Program will read the file ,fatch loopback0 address and ssh into the respective device.
Program will push the command “sh ip int brief” in second step and display output on screen .We have taken example of 3 devices to test the code.If there are more number of devices ,just need to add the loopback0 of additional device in device.txt file
Python code is written to configure the loopback10 with IP addresss into each respective devices (mentioned in devices.txt file) by reading the required device config file stored as respective device Loopback0.txt file.( if need to add more configuration ,just need to add the config in that respective device loopback0.txt file.)
I have used GNS environment to test the python program.
We have Used Netmiko Library to access cisco devices to get the required output and also configure the device
Below are the functions defined in Python code :
Ivan Pepelnjak has an interesting post up today about MacGyver-ing in the network. He and Simon Milhomme are right that most small-to-medium sized networks are pretty much non-reference architectures and really, really difficult to manage and maintain properly on the best of days. On the worst of days, they’re a nightmare that make you want to run screaming into the night. But why?
Part of the issue is that reference architectures and cookie-cutter designs aren’t made for SMEs. Sure, the large enterprise and cloud providers have their own special snowflakes. But so too do small IT shops that have been handed a pile of parts and told to make it work.
People like Greg Ferro and Peyton Maynard-Koran believe this is due to vendors and VARs pushing hardware and sales cycles like crazy. I have attributed it to the lack of real training and knowledge about networking. But, it also has a lot to do with the way that people see IT as a cost center. We don’t provide value like marketing. We don’t collect checks like accounting. At best, we’re no different than the utility companies. We’re here because we have to be.
Likewise, Continue reading
Cybersecurity has become an integral part of any IT system. This course is focused on the 5 key elements of penetration testing: Information Gathering, Scanning, Enumeration, Exploitation, and Reporting. These key areas build upon each other and provide you with the technical know-how to gear you up for a career in penetration testing.
Who Should Watch:
This course is for students who want to become a penetration tester. It is recommended to have at least 3 years experiences with networking and basic security knowledge. Other cybersecurity certifications are always a help.
What You’ll Learn:
In this course you will learn the required skills to pass the CPTE demonstration practical knowledge of penetration testing and cybersecurity. At the end of this course you will have the understanding of the basic course requirements to pass the exam and conduct penetration tests.
About The Instructor:
Joe Brinkley has over 10 years of professional IT and Information Security experience under his belt. Joe has always been a tinkerer, geek and all around “computer guy.” He has numerous certifications including the CPTE.
All Access Pass members can view this course on our streaming site. You can also purchase this course at ine.com.
Today we’re excited to announce the official GA of Rocket Loader, our JavaScript optimisation feature that will prioritise getting your content in front of your visitors faster than ever before with improved Mobile device support. In tests on www.cloudflare.com we saw reduction of 45% (almost 1 second) in First Contentful Paint times on our pages for visitors.
We initially launched Rocket Loader as a beta in June 2011, to asynchronously load a website’s JavaScript to dramatically improve the page load time. Since then, hundreds of thousands of our customers have benefited from a one-click option to boost the speed of your content.
With this release, we’ve vastly improved and streamlined Rocket Loader so that it works in conjunction with mobile & desktop browsers to prioritise what matters most when loading a webpage: your content.
To put it very simplistically - load time is a measure of when the browser has finished loading the document (HTML) and all assets referenced by that document.
When you clicked to visit this blog post, did you wait for the spinning wheel on your browser tab to start reading this content? You Continue reading
In addition to NSX, the company’s software-defined storage and hyperconverged products also saw strong growth during the first quarter of its fiscal 2019.