DHCP

DHCP (Dynamic Host Configuration Protocol) explained.

DHCP, four letters that network administrators love. Would you like to know why?

What is DHCP? 

The Dynamic Host Configuration Protocol (DHCP) is a helpful solution for management, very used on TCP/IP networks. It provides automatically IP addresses and all the necessary network configurations (DNS server, default gateway, etc.) to connected devices to communicate. 

The magic word here is “automatically”. Usually, such tasks are executed manually by network administrators. If they manage a small network, it can be ok. But talking about big networks to be in charge of that can really be overwhelming. 

Dynamic Host Configuration Protocol works on a client-server model. Clients must have DHCP to communicate with a DHCP server properly. 

How does DHCP work?

If we consider just the assignment of IP addresses, let’s say that every device that connects to a network requires a unique IP address. The same IP address can’t work for two or more devices. If, by mistake, one IP address is given to two different devices, the connection won’t work, or perhaps, only one will manage to get it but not the other.

Once an IP address is given and the connection works, there is still constant monitoring over it, with different management’s objectives. If it expires but the device wants to keep connected, the IP address must be renewed. It’s also important to check when the IP address is not in use anymore because more devices connected ask for one, and administrators can’t run out of resources (IP addresses).

When you have DHCP, all these tasks can be configured in the most convenient way for you, and then they will happen automatically without the need for human supervision. 

What is the DORA process?

Dynamic Host Configuration Protocol works through a four-step process. Four messages are exchanged between a client and a DHCP server. 

D”, DHCP Discover message. A connected device needs an IP address. To request it, the first message it sends to the network is to discover a DHCP server that can provide it.

O”, DHCP Offer message. Once the Dynamic Host Configuration Protocol server receives the discover message from a client, it will respond with the requested IP address. It will offer this resource to the device.

R”, DHCP Request message. The device receives the IP address, and it will send a request message where basically it will say something like: “I’m ok with the resource (IP address), assign it to me”.

A”, DHCP Acknowledgement message. The DHCP server receives the device’s message accepting the IP address. Then, it will supply the IP address and all the necessary data and configurations for using it (DNS server, subnet mask…). It will register information related to the device, like:

  • The IP address assigned. Number sequence.
  • The expiration date of the IP address. Remember, this resource can be used for a specific period of time. When the use time finishes, it gets back to the IP pool, and it will be supplied to a different device. 
  • Media access control address (MAC address), the unique identifier given to a network interface controller (NIC) to use as a network address for communications that take place in a specific part of that network.

Benefits of using DHCP.

  • Managing IP addresses for your network will be easier and more efficient. All tasks related to them can happen without you checking them one by one. 
  • Human mistakes while managing IP addresses will be fewer. 
  • Configurations, changes, and upgrades related to those complex serial numbers will be managed accurately by DHCP. 

Conclusion.

The possibility of making daily, repetitive tasks happen automatically is really attractive. DHCP is a smart choice. Try and experience its efficiency directly. Your network’s productivity will be truly improved.  

DKIM record

What is the DKIM record?

Fighting spam and phishing emails is a never-ending battle, in which one of the key players is the DKIM record. It will guarantee the sender of a main, based on the link with the domain name, and will serve as proof that the email was not forged on the way. 

What is the DKIM record?

The DKIM (Domain Keys Identified Mail) record is a DNS record (TXT DNS record) that a DNS administrator of a domain uses to set proof that the emails sent from the domain are legit through cryptographic authentication. On the other hand, the receiver will also use the DKIM record by performing a DNS query on the domain to verify the sender using the information in the header. 

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Secondary DNS (Backup DNS)

Secondary DNS, why is it important for me

If you are researching what secondary DNS is, pretty sure you already know the relevance of DNS for the Internet, websites, sites’ owners, and users.

Knowing that proper performance and constant accessibility rely on DNS infrastructure, it is easier to understand the value of redundancy. No doubt, having DNS records saved in different servers offers attractive advantages for your business.

What is it?

Secondary DNS is a helpful mechanism to distribute DNS records (specific DNS zone) through different servers. Let’s put it this way. A primary DNS server, in the past also known as “master server”, informs a bunch of secondary DNS servers, also known as “slave servers”, about a change in the DNS zone. So the secondary servers have the instruction to request those changes to the primary DNS server to keep updated.

Making it simple, Secondary DNS is a solution for pulling DNS records from the main server to many others through the DNS queries and keep a copy of these DNS records. 

Check the following page if you are searching for a qualitative Secondary DNS service!

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Promo TLD

TOP 5 Promo TLDs from ClouDNS

Do you want to start a new business with one of the hottest promo TLDs from ClouDNS.net?

Here we have five amazing options for you! Many options to find the best domain name, with a very particular TLD that will clearly indicate to your audience the purpose of your site. Go ahead and browse these promotional domains and get the right domain name for you before somebody else takes it!

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Domain parking

How does Domain parking work?

This is a useful and profitable activity that got born as a result of the Internet’s success. Domain parking can be a security measure for online businesses. Since having a catchy domain name got crucial for being visible among millions of other businesses on the Internet, someone saw a chance on reserving them.  

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DNS A record

DNS A record – everything you need to know

If you don’t want to waste time and read the 50+ pages of DNS A record’s RFC 1035, you came to the right place. Here we will show you everything you need to know about this DNS record in brief. 

DNS explained in seconds

From the users’ perspective, you want an easy way to get to the websites on the internet. You simply type the domain name, and you are not worried at all about how to get to the web hosting that has the information for the domain you required. 

Why do you need a DNS A record?

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cloud giant comparison

The Cloud Giants comparison AWS, Google, Azure, Alibaba Cloud

The sky is getting cloudier. Each time there are more and bigger clouds, full of services. All of them are good, and they want to be your all-in-one solution. Which cloud giant should you try? Check this cloud giants comparison and see if AWS is still the undisputed king, or Google, Azure, and Alibaba Cloud have enough to offer to compete.

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Tech deals of 2020

The biggest tech deals of 2020

The pandemic 2020 redesigned the world and everybody’s routine. We turned virtual for socializing, schooling, delivering, banking, and working. And everything has been possible due to the tech industry. 

Software and hardware to power this new world have kept evolving and growing massively. 

Tech players have been totally focused on getting the biggest profit out of this. The announcement of new mergers and acquisitions clearly showed strategic movements to expand, fight for the leadership, or have new market opportunities. 

Let’s take a look at the billionaire tech deals of 2020.

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DNS Failover

DNS Failover explained

In the best-case scenario, your DNS will always work perfectly. The name servers will be up all the time, and your visitors will get their queries resolved without any problem. Sadly the perfect case does not exist. Sometimes servers go down. Here comes the DNS Failover. It is a simple mechanism to redirect the traffic in case of a failure.

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