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Code Review in Software Development Process
In the Software Development process, code review is one of the major processes. It plays a vital role in developing quality software and reducing human errors. This article highlights the significance of code review and tries to answer questions...
Digging deep into dig command
DIG stands for Domain Information Groper. As the name suggests it is used to grab information from a DNS server. It is one of the most powerful yet most underrated utility. Sometimes we get overwhelmed by all the information that is shown and...
Accessing vCenter in VMware Cloud on AWS SDDC from the Internet
Like any other SDDCs and vSphere environment, VMware Cloud on AWS SDDC is also managed and administered from within VMware vCenter Server. vCenter server provides a centralized and extensible platform for managing virtual infrastructure. vCenter...
Things that you should know about DNS
In this article I will explain you things that you should know about DNS. We think we all know what DNS is and how it works, but we get sloppy at times. So, I decided to dig deep into DNS. I decided to write what I learned. I may not be able to...
Networking Architecture – Hybrid
Yet another interesting architecture including AWS services like AWS Site-to-Site VPN, PrivateLink and Transit Gateway. This solution enables connectivity between a Corporate Data Center and workloads deployed in AWS Environment. Let’s say we want...
What to do when you can’t chmod chmod?
When you cannot chmod chmod? What to do? This might help to re-instate permission back. Here are following techniques where you can use chmod to change permission when chmod itself is not executable. Using rsync: The first technique is to use rsync...
How does Linux kernel decide which process to kill when there is no memory left on the system?
Linux kernel has a feature or application called OOM Killer. It kills the process whenever it is out of memory. OOM decides which process to kill based on a score that it calculates which is called oom_score. You can find oom_score for each process...
Encrypting Systems Manager Sessions
I recently discovered that we can encrypt ec2 sessions launched via AWS Systems Manager. I figured it needs a few things in place to make it happen, A KMS key to be used for encrypting sessions with the following policy attached to it. Refrence...
Creating Cloud to Cloud Policy Based IPSEC VPN between two SDDC on VMware Cloud on AWS
VPN is a basic networking construct when it comes to connecting multiple sites privately. Be it a private network connection from one on-premise site to another on-prem site, or a connection from an on-prem site to VMware Cloud on AWS SDDC (or vice versa), or even to establish private connections between VMware Cloud on AWS SDDC to another VMware Cloud on AWS SDDC.
Future of Technologies: Blockchain
"Everything will be tokenized and connected by blockchain one day" - Fred Ehrsam Blockchain was invented by group of people using the name Satoshi Nakamoto in 2008 to serve as the public transaction ledger of the crypto currency Bitcoin.What really...
Moodle Installation and Configuration on Amazon EC2 Instance
Moodle is a learning platform designed to provide teachers, educational organizations and learners to design their own learning environments. Moodle uses PHP language to built-in free and open-source learning management system and it is distributed under the General Public License (GNU). New released year 2020 Moodle version is 3.9.
How do I configure a site-to-site VPN to between AWS VPN and Openswan Instance
I want to connect to my Amazon Virtual Private Cloud (Amazon VPC) from my on-premises. How can I configure Openswan for this purpose?
VPC Ingress Routing
The VPC incoming network traffic would have to be forwarded to on-premises appliance or firewall in order to inspect the traffic and routed back to VPC which is not an ideal solution, it adds latency and complexity.
VPC Basics
Amazon VPC (Virtual Private Cloud) is a virtual network infrastructure like a physical datacenter, which provides network connectivity to all the resources deployed in that VPC. There are few key concepts for VPCs which you should understand: VPC-...
Recent Posts
- Windows Server 2019: a step-by-step tutorial on System Center Configuration Manager (SCCM) with practical example
Creating VMware Clouds in Multiple Clouds
Integrate Azure Files with Azure VMware Solution- Infrastructure as Code (IaC) to deploy Managed EKS Cluster and Node Group on AWS – Part 2
- Infrastructure as Code (IaC) to deploy Managed EKS Cluster and Node Group on AWS – Part 1
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Code Review in Software Development Process
In the Software Development process, code review is one of the major processes. It plays a vital role in developing quality software and reducing human errors. This article highlights the significance of code review and tries to answer questions...
Digging deep into dig command
DIG stands for Domain Information Groper. As the name suggests it is used to grab information from a DNS server. It is one of the most powerful yet most underrated utility. Sometimes we get overwhelmed by all the information that is shown and...
Accessing vCenter in VMware Cloud on AWS SDDC from the Internet
Like any other SDDCs and vSphere environment, VMware Cloud on AWS SDDC is also managed and administered from within VMware vCenter Server. vCenter server provides a centralized and extensible platform for managing virtual infrastructure. vCenter...
Things that you should know about DNS
In this article I will explain you things that you should know about DNS. We think we all know what DNS is and how it works, but we get sloppy at times. So, I decided to dig deep into DNS. I decided to write what I learned. I may not be able to...
Networking Architecture – Hybrid
Yet another interesting architecture including AWS services like AWS Site-to-Site VPN, PrivateLink and Transit Gateway. This solution enables connectivity between a Corporate Data Center and workloads deployed in AWS Environment. Let’s say we want...
What to do when you can’t chmod chmod?
When you cannot chmod chmod? What to do? This might help to re-instate permission back. Here are following techniques where you can use chmod to change permission when chmod itself is not executable. Using rsync: The first technique is to use rsync...
How does Linux kernel decide which process to kill when there is no memory left on the system?
Linux kernel has a feature or application called OOM Killer. It kills the process whenever it is out of memory. OOM decides which process to kill based on a score that it calculates which is called oom_score. You can find oom_score for each process...
Encrypting Systems Manager Sessions
I recently discovered that we can encrypt ec2 sessions launched via AWS Systems Manager. I figured it needs a few things in place to make it happen, A KMS key to be used for encrypting sessions with the following policy attached to it. Refrence...
Creating Cloud to Cloud Policy Based IPSEC VPN between two SDDC on VMware Cloud on AWS
VPN is a basic networking construct when it comes to connecting multiple sites privately. Be it a private network connection from one on-premise site to another on-prem site, or a connection from an on-prem site to VMware Cloud on AWS SDDC (or vice...
Future of Technologies: Blockchain
"Everything will be tokenized and connected by blockchain one day" - Fred Ehrsam Blockchain was invented by group of people using the name Satoshi Nakamoto in 2008 to serve as the public transaction ledger of the crypto currency Bitcoin.What really...
Moodle Installation and Configuration on Amazon EC2 Instance
Moodle is a learning platform designed to provide teachers, educational organizations and learners to design their own learning environments. Moodle uses PHP language to built-in free and open-source learning management system and it is distributed...
How do I configure a site-to-site VPN to between AWS VPN and Openswan Instance
What is Open Swan?Openswan has been the de-facto Virtual Private Network software for the Linux community since 2005. If you are running Fedora, Red Hat, Ubuntu, Debian (Wheezy), Gentoo, or many others, it is already included in your distribution!...
VPC Ingress Routing
The VPC incoming network traffic would have to be forwarded to on-premises appliance or firewall in order to inspect the traffic and routed back to VPC which is not an ideal solution, it adds latency and complexity. A route table is associated with...
VPC Basics
Amazon VPC (Virtual Private Cloud) is a virtual network infrastructure like a physical datacenter, which provides network connectivity to all the resources deployed in that VPC. There are few key concepts for VPCs which you should understand: VPC-...
Recent Posts
- Windows Server 2019: a step-by-step tutorial on System Center Configuration Manager (SCCM) with practical example
- Creating VMware Clouds in Multiple Clouds
- Integrate Azure Files with Azure VMware Solution
- Infrastructure as Code (IaC) to deploy Managed EKS Cluster and Node Group on AWS – Part 2
- Infrastructure as Code (IaC) to deploy Managed EKS Cluster and Node Group on AWS – Part 1
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