With the latest OS versions, RHEL 8 and up, the OS is now running the DAD (Duplicate Address Detection) algorithm … Continue reading Newer RHEL compatible OS with network-manager having startup errors because of tentative state on the network interface
This post is for monitoring the event logs through a power shell script and then execute a wireshark from command … Continue reading Windows Powershell script for automating packet captures when an alarm event shows in the logs
This article is meant to help companies that own a DNS resolver and want to make sure their service is … Continue reading Checking DNS response time with a simple script
If you are an apple lover, there is no need to look for information about this device, but if you … Continue reading Is it worth to buy an iwatch 6/7?
An ISP is the company the gives you access to the Internet. Not all companies offer internet access only, for … Continue reading What is an ISP (Internet Service Provider)?
DNS service is very important for using our everyday tools today. All our banking apps, Alexa, Siri, Google Assistant, booking … Continue reading What are DNS caching servers?
DNS queries are a bit different. Since it is the first requirement that must be resolved before being able to … Continue reading How does a DNS query work?
DNS stands for Domain Name System. It was invented because it is very difficult for us humans to remember long … Continue reading What is a DNS?
Internet access has become something widely available in the world that helps us all on many tasks while making our … Continue reading How our devices access the internet
It has been sometime since I’ve been amazed by electricity, probably one of the reasons why I studied Electrical Engineering. … Continue reading Cheap Energy for us all
Luis Castro's Blogs 