Installing FTP client (or any other Linux tool) on Cumulus Linux

Hello my friend,

Recently I’ve been engage in some troubleshooting with Cumulus and was looking for the way, how can I send the cl-support file from my switches directly to the vendor support bypassing downloading them to my laptop.



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Brief description

Let’s take a closer look into the issue. The Cumulus Linux is based on the Continue reading

Innovative Methodologies for Freelance Writers

Whenever anyone thinks about freelancing, they just imagine someone being by the beach relaxing and doing soft work either with their laptops or their mobile devices. And actually, this is the aim of freelancing. It helps one to freely work in their comfortable places. Freelance writers also have the choice to choose exactly when they would work and when they would rest. Nothing is forcefully put on them. They live a life of choice.

Though this makes it seem like freelancers have it simple and basic, it is one of the things lots of people don’t understand in the freelancing world.

Issues Faced by Freelance Writers

One of the main issues is that freelancing isn’t a consistent job. This means you could get a lot of jobs in a week and the next month you could get nothing. Getting to a point where you’ll be constantly getting gigs is quite difficult too. There’s a lot of competition in this career choice that is quite rewarding. But it is a sensitive issue if you think about it. It can get quite frustrating too.

What Makes Things Get this Difficult?

For one to succeed in the world of freelancing, you need to Continue reading

New Content: VMware NSX-T 3.0 Update

When VMware NSX-T 3.0 came out, I planned to do an update session of the VMware NSX Technical Deep Dive webinar along the lines of what I did for AWS Networking a few weeks ago. However, it turned out that most of the new features didn’t take more than a bullet or two on an existing slide, or at most a new slide.

Covering them in a live session and then slicing-and-dicing the resulting recording simply didn’t make sense, so I updated the videos in summer 2020 (the last batch was published in early August).

Read more …

New Content: VMware NSX-T 3.0 Update

When VMware NSX-T 3.0 came out, I planned to do an update session of the VMware NSX Technical Deep Dive webinar along the lines of what I did for AWS Networking a few weeks ago. However, it turned out that most of the new features didn’t take more than a bullet or two on an existing slide, or at most a new slide.

Covering them in a live session and then slicing-and-dicing the resulting recording simply didn’t make sense, so I updated the videos in summer 2020 (the last batch was published in early August).

Read more …

Virtual consensus in Delos

Virtual consensus in Delos, Balakrishnan et al. (Facebook, Inc.), OSDI’2020

Before we dive into this paper, if you click on the link above and then download and open up the paper pdf you might notice the familiar red/orange splash of USENIX, and appreciate the fully open access. USENIX is a nonprofit organisation committed to making content and research freely available – both conference proceedings and the recorded presentations of their events. Without in-person conferences this year, income is down and events are under threat. If you want to help them, you have options to donate, become a member, or even talk to your organisation about becoming a partner, benefactor, or patron. Every little helps!

Back in 2017 the engineering team at Facebook had a problem. They needed a table store to power core control plane services, which meant strong guarantees on durability, consistency, and availability. They also needed it fast – the goal was to be in production within 6 to 9 months. While ultimately this new system should be able to take advantage of the latest advances in consensus for improved performance, that’s not realistic given a 6-9 month in-production target. So realistically all Continue reading

Resizing Windows to a Specific Size on macOS

I recently had a need (OK, maybe more a desire than a need) to set my browser window(s) on macOS to a specific size, like 1920x1080. I initially started looking at one of the many macOS window managers, but after reading lots of reviews and descriptions and still being unclear if any of these products did what I wanted, I decided to step back to using AppleScript to accomplish what I was seeking. In this post, I’ll share the solution (and the articles that helped me arrive at the solution).

My first stop was this blog post by Ethan Banks. I tried replicating the AppleScript he used, but couldn’t get it to work. I’m still running macOS 10.14 “Mojave,” so perhaps his code was specific to macOS 10.15 “Catalina.” I moved on, never realizing there was another section to his post that had the information I needed (and would eventually find). Let that be a lesson to be sure to read the entire post next time.

Moving on, I arrived at this post. OK, this used a different mechanism than Ethan’s post. I tried it, and it sort of worked, but it didn’t create the window geometry Continue reading

Jinja2 Tutorial – Part 6 – Include and Import

Welcome to another instalment in my Jinja2 Tutorial series. So far we've learned a lot about rendering, control structures and various functions. Here we'll start discussing language features that help us deal with organizing templates. First constructs we'll look at are include and import statements.

Jinja2 Tutorial series

Contents

Introduction

Include and Import statements are some of the tools that Jinja gives us to help with organizing collections of templates, especially once these grow in size.

By using these constructs we can split templates into smaller logical units, leading to files with well-defined scopes. This in turn will make it easier to Continue reading

Quick personal vpn – wireguard with aws

I have written about wire-guard previously about how easy it is to set-up a personal vpn

https://r2079.wordpress.com/2020/05/16/wireguard-server-and-qr-code-scan-in-the-mobile-app-its-that-simple-to-set-up-a-vpn/

What is the issue: I have never explained the use-case clearly in that post, let me try to re-attempt the write-up again

you see, on a personal basis I need to access few websites which are hosted in India, issue with these websites is that they dont allow any traffic external to the country

There are many browser based proxies out there which can do this task just fine and also paid services, my problem is that when you are exchanging user/password information and financial transactions over these proxies you don’t know how exactly all this data getting exchanged and transmitted

Few Tips from my experience before i get into the post :

-> you need to change ubuntu instances ipv4 forwarding so that it will forward packets through the instance also nats it 

root@ip-172-31-34-66:~# cat /etc/sysctl.conf | egrep -i ip_forward
net.ipv4.ip_forward=1
root@ip-172-31-34-66:~#

-> Make sure you dont start routing everything first, take public DNS’s and test the system with allowed_ips in the configuration file else you will loose internet access and if not done correctly you will Continue reading

Announcing Spectrum DDoS Analytics and DDoS Insights & Trends

Announcing Spectrum DDoS Analytics and DDoS Insights & Trends
Announcing Spectrum DDoS Analytics and DDoS Insights & Trends

We’re excited to announce the expansion of the Network Analytics dashboard to Spectrum customers on the Enterprise plan. Additionally, this announcement introduces two major dashboard improvements for easier reporting and investigation.

Network Analytics

Cloudflare's packet and bit oriented dashboard, Network Analytics, provides visibility into Internet traffic patterns and DDoS attacks in Layers 3 and 4 of the OSI model. This allows our users to better understand the traffic patterns and DDoS attacks as observed at the Cloudflare edge.

When the dashboard was first released in January, these capabilities were only available to Bring Your Own IP customers on the Spectrum and Magic Transit services, but now Spectrum customers using Cloudflare’s Anycast IPs are also supported.

Protecting L4 applications

Spectrum is Cloudflare’s L4 reverse-proxy service that offers unmetered DDoS protection and traffic acceleration for TCP and UDP applications. It provides enhanced traffic performance through faster TLS, optimized network routing, and high speed interconnection. It also provides encryption to legacy protocols and applications that don’t come with embedded encryption. Customers who typically use Spectrum operate services in which network performance and resilience to DDoS attacks are of utmost importance to their business, such as email, remote access, and gaming.

Spectrum customers Continue reading

Securing Your Work From Home

UnlockedDoor

Wanna make your security team’s blood run cold? Remind them that all that time and effort they put in to securing the enterprise from attackers and data exfiltration is currently sitting unused while we all work from home. You might have even heard them screaming at the sky just now.

Enterprise security isn’t easy, nor should it be. We constantly have to be on the offensive to find new attack vectors and hunt down threats and exploits. We have spent years and careers building defense-in-depth to an artform not unlike making buttery croissants. It’s all great when that apparatus is protecting our enterprise data center and cloud presence like a Scottish castle repelling invaders. Right now we’re in the wilderness with nothing but a tired sentry to protect us from the marauders.

During Security Field Day 4, I led a discussion panel with the delegates about the challenges of working from home securely. Here’s a link to our discussion that I wanted to spend some time elaborating on:

Home Is Where the Exploits Are

BYOD was a huge watershed moment for the enterprise because we realized for the first time that we had to learn to secure other people’s Continue reading

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