Mark's Tech Blog
A network is 2, or more devices (computers, IoT, mobiles, etc.) connected to each other for the purpose of exchanging data electronically.
The subnet mask is a separator that defines which part of the IP address is dedicated to the hosts (connected devices) and which part is dedicated to the network address. The subnet mask gives us the size of the network that we are working with.
If it’s about the domain name system (DNS), there is a lot to be said. It’s not simple stuff. A lot of processes and components are meshing to make the big system work efficiently.
When you dig behind everything needed for the Internet to run, every click gets a very different dimension. It’s not just a finger-clicking but whole machinery moving to get your website for the potential clients that request it.
Domain name system (DNS) is what makes possible that simplicity for users. But for the magic to happen, different elements are a must, like recursive DNS servers.
Here we have a great list of tips on how to protect your website from hackers. Not only basic tips for website protection but also many advanced ones that will keep you safe. Check them out, and if you are still not using all of them, please consider adding them to your site’s protection.
The DNS records are the instructions that clients and servers are searching for a particular domain. The common ones are the A records for a domain name to IP address resolution, the CNAME for redirecting subdomain to the domain name, MX for incoming mail servers, etc. But the DNS CAA record is not so well-known, so now we will explain it to you.
The DNS CAA record (Certification Authority Authorization) is a record that the DNS administrator of a domain can add to clarify which Certificate Authorities (CAs) can issue SSL or TLS certificates for the particular domain. The CA are external organizations that you, as a domain owner, can choose to issue cryptographic certificates like SSL or TLS for your domain name.
The cryptographic certificate is used to validate the domain owner and to encrypt the communication with that domain. That way, it protects sensitive data.
With the CAA, the domain owner will have improved control over the process of issuing certificates. He or she can clearly state who is permitted to issue certificates and lower the number of miss-issued certificated for that domain. The CAA record can be used for the whole domain, or chosen subdomains only, depending on how you set it up.
One common requirement for using CAA records is to first enable DNSSEC. That is required for better security and trust from the side of the CA.
Perhaps if you hear CDN, you can get confused, or you totally ignore what it is about. But what if we mention Amazon, Netflix, Facebook, or Youtube?
Well, CDN is currently as popular as such international ventures. Just you don’t know it because it works in the backstage. Without it, not only those companies but many around the world just could not deliver their content to all their users.
Let’s compare these two DNS record types that have a similar purpose. Both redirect from one hostname to another, but they have more than a few differences in between. Let’s see what exactly distinguishes the ALIAS record and the CNAME record.
ALIAS record links two hostnames, showing that one is just another way to write the other. It is not a standard DNS record type, and not all of the Managed DNS providers offer it. This record type can coexist with other DNS records, for example, MX records. A great thing about the ALIAS records is that they will save time and not only show the other hostname, but an ALIAS query will return the IP address. The only problem with ALIAS that might lead you to CNAME records is that it doesn’t work well with GeoDNS because it will show the IP address of the name server and won’t redirect to the best location.
The Internet is deeply ingrained in our lives. And how to deny how nice, simple and comfortable it makes our daily tasks.
The big issue is that not only do you make businesses online, lots of criminals have also chosen the online land to settle on and get money through scams.
Scams have different disguises, and there are not only individuals but groups operating a wide variety of frauds. Their target? Everybody. Some look for big fishes. Others don’t mind cheating or extorting small businesses or regular users.
ICANN is short of Internet Corporation for Assigned Names and Numbers. It is a non-profit organization that manages and maintains different databases related to namespaces and number spaces on the Internet.
In really short: ICANN coordinates the use of domain names and IP addresses so that the Internet, as we know it, can function without conflicts. Thanks to it, you can’t have two people who have the same domain name or two computers with the same IP address.
So, you want to know when and why should you use IPv6? You came to the right place. Let’s see why is better and for what to use it.
IPv6 is the 6th version of the IP, the internet protocol. The IPs are a combination of rules the device must follow in order to send and receive data from a host to the destination. We need to have identifiable hosts with their locations – IP addresses and a route for the communication.
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