Dyndns and Openvpn – Remote Management

I have visited my home and was doing some hobby IT setup with Raspberry Pi’s, the problem is that i had problems many times accessing my home PC is another Remote Location due to many reasons, lets say crappy ISP. I contacted my ISP and they said I need to take a static IP and also pay for opening up two non standard ports. Its like you pay to get tortured and then additional headache of Port forwarding.

To add more to the pain, the IP that i get from my upstream provider is a Private IP, wow I havent seen that for a while. Anyways, to get around this I was thinking about using OPENVPN as a solution along with Dyndns.

Now, setup is very simple

Clint-pc (Location 1) ———-AWS(OPENVPN)————Client-pc (Location 2)

Why AWS -> Accessible and Cost

Problem is changing IP, I dont have any business requirement or criticality to buy a Elastic IP , but whole point will be lost if my clients wont know what to access, worse I will never have access to location-2 if am in location-1 to change IP Addresses

I have mapped OPENVPN with dyndns script.

https://help.dyn.com/ddclient/

This really solved Continue reading

Faster builds in Docker Compose 1.25.1 thanks to BuildKit Support

One of the most requested features for the docker-compose tool is definitely support for building using Buildkit which is an alternative builder with great capabilities, like caching, concurrency and ability to use custom BuildKit front-ends just to mention a few… Ahhh with a nice blue output! And the good news is that Docker Compose 1.25.1 – that was just released early January – includes BuildKit support!

BuildKit support for Docker Compose is actually achieved by redirecting the docker-compose build to the Docker CLI with a limited feature set.

Enabling Buildkit build

To enable this, we have to align some stars.

First, it requires that the Docker CLI binary present in your PATH:

$ which
docker/usr/local/bin/docker

Second, docker-compose has to be run with the environment variable COMPOSE_DOCKER_CLI_BUILD set to 1 like in:

$ COMPOSE_DOCKER_CLI_BUILD=1 docker-compose build

This instruction tells docker-compose to use the Docker CLI when executing a build. You should see the same build output, but starting with the experimental warning.

As docker-compose passes its environment variables to the Docker CLI, we can also tell the CLI to use BuildKit instead of the default builder. To accomplish that, we can execute this:

$ COMPOSE_DOCKER_CLI_BUILD=1 DOCKER_BUILDKIT=1 docker-compose build

A Continue reading

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Verizon Exec Launches Privafy, Challenges Firewall, SD-WAN, VPN Vendors

The security startup has about a dozen paying customers and is “working with some of the largest...

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Day Two Cloud 032: The Foggy Path To Cloud Certification

Certifications are a tried and true way to boost skills and knowledge, burnish your resume, and create new opportunities. But when it comes to cloud, which certifications should you pursue? Can cloud cert programs keep up with technology churn and rapid rollout of new services? How should you study? What if you fail? We tackle all these questions and more with guest Mike Pfeiffer.

Day Two Cloud 032: The Foggy Path To Cloud Certification

Certifications are a tried and true way to boost skills and knowledge, burnish your resume, and create new opportunities. But when it comes to cloud, which certifications should you pursue? Can cloud cert programs keep up with technology churn and rapid rollout of new services? How should you study? What if you fail? We tackle all these questions and more with guest Mike Pfeiffer.

The post Day Two Cloud 032: The Foggy Path To Cloud Certification appeared first on Packet Pushers.

Red Hat, Cloud Save IBM

More than 2,000 IBM clients were using its container systems, and it signed 21 Red Hat deals in Q4...

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Follower Clusters – 3 Major Use Cases for Syncing SQL & NoSQL Deployments

Follower Clusters – 3 Major Use Cases for Syncing SQL & NoSQL Deployments

Follower clusters are a ScaleGrid feature that allows you to keep two independent database systems (of the same type) in sync. Unlike cloning or replication, this allows you to maintain an active, point-in-time copy of your production data. This extra cluster, known as a follower cluster, can be leveraged for multiple use cases, including for analyzing, optimizing and testing your application performance for MongoDB, MySQL and PostgreSQL. In this blog post, we will cover the top three scenarios to leverage follower clusters for your application.

How Do Follower Clusters Differ From Replication?

Unlike a static clone, this data imports on a set schedule so your follower cluster is always in sync with your production cluster. Here are a few critical ways in which it differs from replication:

Migration from VMware NSX for vSphere to NSX-T

Migration to VMware NSX-T Data Center (NSX-T) is top of mind for customers who are on NSX for vSphere (NSX-V). Broadly speaking, there are two main methods to migrate from NSX for vSphere to NSX-T Data Center: In Parallel Migration and In Place Migration. This blog post is a high-level overview of the above two approaches to migration.

2 Methods for VMware NSX Migration

Customers could take one of two approaches for migration.

In Parallel Migration:

In this method, NSX-T infrastructure is deployed in parallel along with the existing NSX-V based infrastructure.  While some components of NSX-V and NSX-T, such as management, could coexist, compute clusters running the workloads would be running on its own hardware.  This could be net new hardware or reclaimed unused hardware from NSX-V.

Migration of the workload in this approach could take couple of different approaches.

  • Cattle:  New workloads are deployed on NSX-T and the older workloads are allowed to die over time.
  • Pets:  Lift and shift workloads over to the new NSX-T infrastructure.

In Place Migration

There is simpler method though!  A method that doesn’t require dedicated hardware.  It’s an in place migration approach.  Curious?   This method uses Continue reading

ShortestPathFirst Now Has a New, Shorter Domain Name – spfirst.net

ShortestPathFirst now has a new, shorter domain name (spfirst.net) that we intend to use for future correspondence, marketing and business initiatives. We will continue to maintain the longer domain (shortestpathfirst.net) for backward compatibility and for business continuity but for all intents and purposes will use the new domain name where possible. Stay tuned for lots …

Continue reading "ShortestPathFirst Now Has a New, Shorter Domain Name – spfirst.net"

5G and Me: And Security

In today’s uber-connected world, everyone has dealt with that little voice in the back of the...

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BrandPost: Huawei CloudCampus Triumphs over Cisco DNA, Tolly Reports

With new technologies such as automation and artificial intelligence (AI) emerging all around us, enterprise digitalization is inevitable. But however much enterprises want to transform, there is a significant cost in terms of time and technological manpower to ensure the system runs smoothly. In particular, enterprises are often faced with a variety of human factors that can hamper digitalization projects, including organizational resistance to change, lack of a clear vision, and inability to gather and leverage customer data, to name just a few.On the technical front, the challenge is in finding the right products and services to overcome the inflexibility of technology stack and development processes. Therefore, picking the most suitable and flexible solutions to meet the transformation challenges is usually the key to success. The right solution not only streamlines deployment but also makes it easier for people who are involved in the exercise – the easier the jobs, the less reluctant the organization towards the changes.To read this article in full, please click here

Vapor IO Raises $90M to Build ‘Nationwide’ Edge Computing Network

It also reached an agreement for Cloudflare to deploy its cloud services on Vapor IO’s Kinetic...

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Juniper to MikroTik – MPLS and VPNv4 interop



Juniper to MikroTik – a new series

Previously, I’ve written a number of articles that compared syntax between Cisco and MikroTik and have received some great feedback on them.

As such, I decided to begin a series on Juniper to MikroTik starting with MPLS and L3VPN interop as it related to a project I was working on last year.

In the world of network engineering, learning a new syntax for a NOS can be overwhelming if you need a specific set of config in a short timeframe. The command structure for RouterOS can be a bit challenging if you are used to Juniper CLI commands.

If you’ve worked with Juniper gear and are comfortable with how to deploy that vendor, it is helpful to draw comparisons between the commands, especially if you are trying to build a network with a MikroTik and Juniper router.

Lab Overview

The lab consists of (3) Juniper P routers and (2) MikroTik PE routers. Although we did not get into L3VPN in this particular lab, the layout is the same.

A note on route-targets

It seems that the format of the route-target has some bearing on this being successful. Normally i’ll use a format like Continue reading

Getting More Bang for Your VXLAN Bucks

A little while ago I explained why you can’t use more than 4K VXLAN segments on a ToR switch (at least with most ASICs out there). Does that mean that you’re limited to a total of 4K virtual ethernet segments?

Of course not.

You could implement overlay virtual networks in software (on hypervisors or container hosts), although even there the enterprise products rarely give you more than a few thousand logical switches (to use NSX terminology)… but that’s a product, not technology limitation. Large public cloud providers use the same (or similar) technology to run gazillions of tenant segments.

Want to know more? Watch our NSX, AWS and Azure networking webinars.
Read more ...

Trade-offs under pressure: heuristics and observations of teams resolving internet service outages (Part 1)

Trade-offs under pressure: heuristics and observations of teams resolving internet service outages, Allspaw, Masters thesis, Lund University, 2015

Following on from the STELLA report, today we’re going back to the first major work to study the human and organisational side of incident management in business-critical Internet services: John Allspaw’s 2015 Masters thesis. The document runs to 87 pages, so I’m going to cover the material across two posts. Today we’ll be looking at the background and literature review sections, which place the activity in a rich context and provide many jumping off points for going deeper in areas of interest to you. In the next post we’ll look at the detailed analysis of how a team at Etsy handled a particular incident on December 4th 2014, to see what we can learn from it.

Why is this even a thing?

Perhaps it seems obvious that incident management is hard. But it’s worth recaping some of the reasons why this is the case, and what makes it an area worthy of study.

The operating environment of Internet services contains many of the ingredients necessary for ambiguity and high consequences for mistakes in the diagnosis and response of an adverse Continue reading

The GPU Is The Worst – And Best – Thing To Happen To The FPGA

A decade or so before the GPU started storming the datacenter thanks to Nvidia’s Tesla GPU accelerators and their CUDA parallel programming environment and CPU offload model, FPGAs were starting to gain traction as accelerators in their own right. …

The GPU Is The Worst – And Best – Thing To Happen To The FPGA was written by Timothy Prickett Morgan at The Next Platform.

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