Tech Blog
Like the normal world, the Internet also has its happy moments, scandals, and mysteries. Daily, computers on the whole planet use IPv4, IPv6 protocols to do their job. But have you thought, where is the IPv5? It’s not a rule, but usually, versions of different things are used consecutively. You can also use previous versions…
NSlookup is a built-in software that allows you to query domain name servers. NSlookup commands can be used on most typical OSes like Windows, macOS, and Linux (Ubuntu, CentOS, Debian, etc.). Now you will see what is it, and how to you it? How to start the NSlookup command? For Windows 1. Press Windows key…
Dig command (domain information groper) is a built-in command that you can find in any macOS computer and most Linux distros. You can use it to perform a quick check related to your DNS. See individual DNS records or check a name server from the Terminal app with a simple 1 line command. It might…
How many times per day, you hear clients or colleagues mentioning “the cloud”? And still, there’s no proper comprehension of the scale and scope of it. There are diverse cloud choices for running your business: PaaS, IaaS, and SaaS. Do you know about them? Let’s give it a look at SaaS. What is SaaS? SaaS…
Servers have a way to communicate for informing about queries’ status. They do that through different HTTP response status codes, like the error 404. Once servers receive a query, they start a process to answer the client with the required website. Using different codes, they indicate if it was successfully completed or not, if there…
So you have set up your Forward DNS. You are happy that you added all the needed DNS records, and you think you are done. Guess again! What are you missing? Just try to send an email from the domain, and immediately you will notice a problem. Your emails are going missing or to the…
What is the MTR command? MTR command is a type of traceroute command developed by Matt Kimball in 1997 that allows both traceroute and ping in the same software. Originally the name MTR was an abbreviation of Matt’s traceroute, but in 1998, his colleague Roger Wolff worked on it too and changed the name to…
You probably came to this article because you want to improve your DNS’s reliability, and you heard about Secondary DNS. Yes, Secondary DNS definitely useful to provide redundancy, and peace of mind, especially in this world, constantly full of DDoS attacks and other DNS problems. Secondary DNS explained? Secondary DNS, also known as Slave DNS…
What are the DNS records? DNS records are text-based instruction for name servers (DNS servers) that can serve to link hosts to IP addresses, IP addresses back to hosts, services to hosts, one name of a host to another, combine to have complex rules, and more. There are some DNS records that are quite essential…
