What is Round-Robin DNS?

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DNS

Round-Robin DNS is the simplest solution that you can apply to create a DNS load balancing for your domain. With Round Robin, you can manage the DNS traffic in a way that will utilize your authoritative name server and redirect the traffic, reducing the stress from a single point (direct to multiple web servers). 

What is load balancing? 

Load balancing is a method for optimizing the network performance by utilizing a particular algorithm to administrate the traffic between multiple servers. The traffic management criteria could be different – the IP address of the visitor, the current occupation of a server, weighted loading balance that depends on the servers’ capacities, and more. 

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How to use Linux MTR command?

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Commands

There are plenty of programs for network diagnostic. You might wonder, do we need one more? 

If you want to trace the route of a query, yes! The MTR command could slightly outperform the traditional Traceroute command and give some more data, so it has a reason to exist. 

What is MTR command?

MTR comes from Matt’s traceroute. First written by Matt Kimball in 1997 and later updated with Roger Wolff’s help, this is software with CLI that helps you see the route of a query. 

It is based on the traditional traceroute command, but it presents each of the hops on the way, with a table-like view and data like data loss, amount of packets sent, the time of the return of each hop. 

MTR command syntax

How to use Linux MTR command? 

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What is Master (Primary) DNS zone?

Posted on By Martin Pramatarov No Comments on What is Master (Primary) DNS zone?
DNS

What is a DNS zone?

The domain namespace in the Domain Name System (DNS) is divided into various segments, with different managers in charge. The administrative responsibility can be delegated to a person, company, or organization. This separation is good for redundancy and better distributes the administrative load.

The Internet’s domain namespace has a hierarchical design. Un is the root domain (the dot after .com), then is the domain name like domainname.com, and under it, there are subdomains like mail.domainname.com or ftp.domainname.com.

Each of these areas can be managed separately with its own Master DNS zone.

A DNS zone has inside DNS records and settings of a DNS namespace. This last one can have one or many DNS zones managed for a specific host or service. All this zone information is saved in a DNS zone file that has the DNS records.

Those records have a mapping between DNS names and their IP address, services and servers, verification purposes, and more. 

Primary DNS server – Everything you need to know

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Why use a Managed DNS provider? 

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DNS, DNS services

The Domain Name System (DNS) is key for the modern Internet to work in the practical, efficient and reliable way we know it.

DNS matches domain names of websites with their IP addresses and vice-versa. Users just write a domain name in their browser. This browser queries the DNS server, which matches the domain name with its right IP address. 

What is managed DNS?

Managed DNS is a service model for clients to use DNS servers hosted by a specific provider to save their DNS data and activate Internet access to their website.

Managed DNS is a service operated by an expert DNS hosting companies.

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How does DNS Failover work? 

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DNS, DNS records, DNS services

Maintenance, updates of software, security measures… Websites owners try everything, and even so, bugs, hardware breakdowns, clustered connections, etc., could get their sites in trouble.

What about having a 24/7 monitoring that can be so aware to notify you about an upcoming problem? Or even better, this “vigilant” reacting on time to protect your site and pocket. 

What is DNS Failover?

DNS Failover is a useful and simple tool for making automatic updates of your DNS records in case of a failure. It is a convenient “B” plan for supporting your DNS, if “A” doesn’t work. 

Think about a common DNS record pointing a domain to a hostname or IP address but with the big advantage that you can define an endpoint, hostname, or IP address as a backup. This backup you create will be used only if the main is not available.

Check out great and reliable DNS Failover service!

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Host command – how to use it?

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Commands

What is Host command?

The Host command is a built-in utility software with a command-line interface that you can find on Linux or macOS and serves for network diagnostics. The most common use of host command is to perform DNS lookups and find different information about a domain name and its DNS records.

Access the command through the Terminal. 

Before we see how to use the Host command, let’s understand it better by seeing the purpose, syntax, and options for better results.

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DS record explained

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DNS records

The DS record is a specific DNS record that is used to secure the DNS (DNSSEC). It uses cryptographic keys to verify zones from the DNSSEC chain of trust.

What is DNSSEC?

DNSSEC is the solution to secure, otherwise unsecured DNS. It is a chain of trust that uses a combination of public and private cryptographic keys to authenticate each step of DNS resolving processes. Starting from the authoritative name server, going through each step on the way, and checking that the DNS records to see if they are truly coming from the authoritative name server for the zone.

How to check DS record?

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