Secondary DNS – What is it?
Secondary DNS, or also often called Slave or Backup DNS, is a great service that provides a network of DNS servers. They are secondary to your Primary DNS server. Their purpose is to duplicate the Primary DNS zone file automatically. That way, you could establish more points in the world where your DNS records are stored. They are available in a situation when your Primary DNS experiences downtime.
The Ping command explained.
Ping command is an easy-to-use network utility tool with a command-line interface. When you type different commands, you can test many parts of your network, such as the router, computer on the network, a selected domain, or IP address.
The ping command benefits from using ICMP (Internet Control Message Protocol). When you want to make a check, you have to choose a target. In addition to that, you can add options, such as the number of packets, timeout limits, continuous pinging, IPv4 or IPv6, etc.
You will receive an answer with statistics.
The ICMP request is a small packet of data, which your device will send to the target. The target has to bounce it back and provide a response for every ping.
The ping command is available on macOS and Linux within the Terminal application. On Windows, you can use it through the Command Prompt.
There are a lot of nerves in choosing a domain name. Is it related to my brand? Should I put keywords in it? Maybe just a short name is enough? Plenty of doubts goes through our heads before we select the right domain name for us. So here we have 5 tips for choosing a domain name and making it a bit less stressful.
Have you seen that some websites still use HTTP instead of HTTPS? What does it mean? Is there any difference? If you are building or already own a website, this interests you.
DNS security is essential for any organization. We need to protect it as much as we can so the company’s regular work does not get affected in any way. Here we have a list of DNS best practices to do it.
Make available only the most necessary. Not everything should be available to the public. You could have private domain names. You should limit the access.
Cloud DNS services are getting popular. More and more companies are benefiting from the Cloud infrastructure and advanced tech that DNS providers can offer. To be able to make a choice, you need first to understand what Cloud DNS service is.
What is DNS?
What is DNS poisoning (DNS spoofing)?
DNS poisoning (DNS spoofing) is a technique that hackers use. It imitates another device, user, or client. It acts as a cover, which makes it easier to disrupt the regular flow of traffic or reach protected information.
Internet is a really large network. The current amount of interconnected networks, devices, servers, routers, data centers, etc., is massive. So it is the amount of information exchanged every day. If we could visualize all the data packets traveling worldwide every single second, the image could be really astonishing.
This constant transit and interaction of components for sure need order. Fortunately, the Internet’s creators took proper actions to avoid chaos, like developing the Internet protocol (IP) that was officially incorporated into the ARPANET (Internet’s ancestor) in 1983. The original version of such IP is exactly the IPv4 address.
Imagine you have an e-commerce site about shoes. One of your models has run out of its black-colored variant, but you still have gray. Your clients could be interested in the other color, but what can you do to direct them to it instead of showing a “temporary out of stock” message? Or what happens if you completely stopped selling this model? Wouldn’t it be nice if you can redirect the traffic to another page and not lose clients? Let’s see the 301 redirect vs 302 redirect comparison now!
HTTP status codes
We could not skip one of the essentials – the DNS CNAME record- to expand the information about Domain Name System records. So let’s dive in and explain a little bit more about it.
DNS CNAME record explained
Another way that the DNS CNAME record is also known as the canonical name record. It has a very specific role. Which is to define one domain name is just a different way to receive the primary hostname. This host name is also known as the canonical domain. Through you are able to benefit from the CNAME record. You can use it for different results and many purposes, but the appropriate way of applying it is for subdomains.
Simply directing your subdomains to your primary domain is the perfect case of using the CNAME record.
There is one thing that you should remember for the DNS CNAME record. If you have such a record already created for one hostname, it will not give you the chance to import any other DNS records for that specific hostname. If you desire to have an action similar to this, directing one hostname to another but also adding more records, such as MX records, you can use the ALIAS record. And that will help you achieve this goal.
How to create a DNS CNAME record?