Comments 0 Feedbacks on “List of Top 4 Dynamic DNS Providers”DNS by Kori

List of Top 4 Dynamic DNS Providers

Searching for a reliable Dynamic DNS provider could sometimes be a challenge. Therefore, in today’s blog post, we will discuss the top 4 providers that offer reliable and affordable services. So, let’s start!

What is Dynamic DNS? 

Dynamic DNS is a service that associates a domain name with a dynamic IP address. That way, users are able to access devices with dynamic IP addresses using a fixed domain name. In addition, DDNS services typically update the IP address associated with a domain name automatically whenever the IP address changes. This ensures that the domain name always points to the correct IP address.

Why do you need a Dynamic DNS Provider? 

Dynamic IP addresses can frequently change, making it difficult to access devices remotely using a static IP address. Dynamic DNS providers solve this problem by assigning a fixed domain name to a dynamic IP address. This allows users to access devices remotely using a domain name that never changes, even when the IP address changes.

Top 4 Dynamic DNS providers

Here are the top 4 Dynamic DNS providers that offer reliable and efficient services:

  • ClouDNS

ClouDNS is a reliable and affordable Dynamic DNS provider that offers a wide range of DNS services. They provide both free and paid services, with a variety of plans that suit different needs. ClouDNS offers an easy-to-use web interface with API access for more advanced users. They also provide advanced features like DNSSEC and DDoS protection.

  • No-IP

No-IP is a well-known Dynamic DNS provider that offers free and paid services. They have been in the business for over 20 years and have a reputation for being reliable and easy to use. No-IP offers a simple setup process with an intuitive web interface. They also provide clients for different operating systems, making it easier to update your IP address automatically.

  • Dynu

Dynu is another popular Dynamic DNS provider that offers free and paid services. They provide an easy-to-use web interface and API access for more advanced users. Dynu also offers advanced features like SSL encryption and port forwarding. They have a reliable and fast network with servers located in different parts of the world.

  • Duck DNS

Duck DNS is a Dynamic DNS provider that offers a simple and easy-to-use service. They provide an API for automatic updates and support different protocols like HTTPS, SSH, and Telnet. Duck DNS is a great option for users who want a simple and reliable Dynamic DNS service without any extra features.

Conclusion

In conclusion, having a Dynamic DNS service is essential for anyone who needs to access their network remotely. There are many providers to choose from, each with unique features and pricing plans. When choosing a provider, consider your specific needs and budget to select the right one for you.

Comments 0 Feedbacks on “What is the purpose of a Recursive DNS server?”DNS servers by Kori

What is the purpose of a Recursive DNS server?

Recursive DNS servers are an essential Domain Name System (DNS) component. They play a vital role in resolving client queries quickly and efficiently and ensuring fast and reliable connections across the internet. In this blog post, we’ll discuss what a recursive DNS server is and its importance in the overall architecture, as well as provide the following:

  • An overview of how it works.
  • The benefits of having one.
  • Tips for troubleshooting any common issues.

What is a Recursive DNS server, and why is it important?

A recursive DNS server or DNS Recursor plays an essential role in the Domain Name System (DNS) by responding to DNS queries from clients. As a part of the overall architecture, it is responsible for providing answers to DNS queries and returning information such as the IP address of a domain name. With a recursive DNS server, clients can quickly and efficiently resolve domain names and access the corresponding websites or services. Therefore, it is an essential component of the DNS network and helps improve overall network performance. By responding quickly and efficiently to DNS queries, the recursive DNS server helps enable faster and more reliable connections across the internet.

Overview of how Recursive DNS works

Recursive DNS servers work by resolving DNS queries sent by clients. For example, when you type in a domain name such as www.example.com, the recursive DNS server will take this input and request the information related to this name from another DNS server. It will then send the appropriate response back to the client with the requested information, such as the IP address of the domain. This process is repeated until the recursive DNS server finds the answer to the query and provides it to the client.  

Typically, recursion is used when the recursive DNS server cannot find the answer to the query in its own databases. A DNS query from the client can be sent to multiple recursive DNS servers before it can locate the answer. This process ensures that the query is resolved even if one or more of the recursive DNS servers is not responding for any reason. The recursive DNS server is thus an essential part of the DNS architecture, enabling users to access sites and services on the internet quickly.

Common Problems with Recursive DNS Servers and Tips for Troubleshooting

Recursive DNS servers can cause a few common issues that can be difficult to diagnose and resolve. These problems include incorrect or slow responses to client queries, issues with DNS resolution, and problems with data replication. To resolve these issues, administrators should first check the status of the server and its connectivity to the other DNS servers. If the problem persists, additional troubleshooting steps may be necessary.

One possible problem is incorrect responses from the recursive DNS server. This can occur if the server’s cache is corrupted or there is a DNS zone file problem. Administrators can flush the cache and update the DNS zone file to resolve this issue. Additionally, it may be necessary to check the server logs to isolate and resolve any related issues. 

Another common issue is slow response times. This could be due to network latency caused by the distance between the recursive DNS server and the DNS server being queried. Administrators should try small changes, such as changing the caching settings, to troubleshoot this issue. They can also increase the number of DNS servers used or add additional caching tiers. These steps can help improve response times and overall network performance.

Conclusion

In conclusion, recursive DNS servers are essential to the Domain Name System (DNS). They play a vital role in responding to client queries quickly and efficiently, ensuring that domain names are resolved quickly and that websites and services are available quickly and reliably. Therefore, understanding how recursive DNS works, the benefits of having one, and knowing how to troubleshoot any common issues are essential for maintaining a smooth and efficient DNS network.

Comments 0 Feedbacks on “All you need to know about DHCP server”DNS, Network by Kori

All you need to know about DHCP server

DHCP server is a robust network that simplifies the management of IP addresses and allows networks to run more efficiently. Learn how DHCP helps reduce the risk of manual configuration errors, optimizes IP address assignment, and provides a secure method of managing IP addresses.

Introduction to DHCP server

Dynamic Host Configuration Protocol (DHCP) is a network protocol that allows a server to assign an IP address to each device on a network automatically, eliminating the need for network administrators to configure each device manually. It also allows to change network configuration parameters, such as the IP address, once a device leaves and rejoins the network. DHCP is an integral component of IP networks and is essential for assigning and managing IP addresses efficiently and securely. DHCP simplifies the job of network administrators by automatically assigning new IP addresses, ensuring communication between devices on the same network, and reducing the amount of manual configuration required. Furthermore, DHCP helps to reduce IP address conflicts by providing a mechanism for devices to negotiate and change IP addresses when needed.

Understanding DHCP packets

DHCP packet structure is a sequence of octets containing header fields, options, and a checksum. Each header field denotes a type of information and carries different payloads depending on the type. Depending on the type, these payloads may contain requests for a lease of IP addresses or hardware addresses, authorization to use reserved IP addresses, server and client information, and any number of other messages. In addition, DHCP packets also contain IP and hardware addresses, requested or assigned configurations, and the length of time for which an address is leased. Once processed, these messages are propagated throughout the network, helping to maintain communication between nodes on the same network. Therefore, understanding DHCP packets is essential to configure and managing IP networks successfully and preventing potential network problems.

Benefits of using a DHCP server

Using a DHCP server offers many benefits, such as:

  • Streamlines and simplifies IP address assignment 
  • Reduces risk of manual configuration errors 
  • Reduces IP conflicts 
  • Easier to handle IP address changes 
  • Provides a secure method of managing IP addresses

DHCP vs DNS: DIfference between them

The primary differences between DHCP and DNS are how they are used. DHCP is primarily used to assign IP addresses to client devices, while DNS is used to translate domain names into IP addresses. DHCP works on a local level, meaning that the server is used to assign IP addresses to the devices within its network, while DNS works on a global scale, allowing users to connect to websites that may be located in different networks. Finally, DHCP is a short-term system allowing devices to change IP addresses when they leave and rejoin the network. At the same time, DNS is a long-term system that works more as a database, keeping records of all the websites and their corresponding IP addresses. 

In terms of security, DHCP provides basic encryption of DHCP messages, while DNS offers more robust protection by using DNSSEC to provide authentication and encryption for DNS messages. DHCP leases are also assigned on a limited basis, which can help reduce occurrences of address spoofing. At the same time, DNS does not offer this type of protection as it is simply a database of all the registered domains and their IP addresses. Ultimately, both DHCP and DNS are essential components of networks, and understanding the differences between them can help network administrators configure, secure and optimize their networks for maximum performance.

Conclusion

Dynamic Host Configuration Protocol (DHCP) is essential to network configuration and management. By understanding the basics of DHCP and how it differs from DNS, administrators can ensure their networks are configured optimally, securely, and efficiently.

Comments 0 Feedbacks on “​How to start using Dynamic DNS [Quick guide]”DNS, Network by Kori

​How to start using Dynamic DNS [Quick guide]

Before going to the quick guide on how to start using Dynamic DNS, let’s go a step before! Do you clearly know what Dynamic DNS is?

​Definition of Dynamic DNS

Dynamic DNS (Domain Name System) is a service that helps you to link a domain name with a dynamic (changing) IP address.

For instance, having a home network with a router that connects to the Internet through an Internet service provider (ISP), the IP address of the router may change periodically. This can make it hard for you to remotely access devices or services on your home network because you need to know the current IP address of the device to get connected.

When you use Dynamic DNS, you can set up a domain name so it will always point to your device, despite its current IP address (IPv4 or IPv6). Every time the IP address of the device changes, the DDNS service will automatically update the DNS record to reflect the new IP address. This means you will always access your home network using the same domain name.

​How to start using Dynamic DNS [Quick guide]

Now, it is time for a quick guide on how to start using Dynamic Domain Name System!

​Step 1. Pick a reliable Dynamic DNS service

There are many different providers. Research, and compare features, pricing, and reputation. Then pick a provider that fits your needs and budget.

​Step 2. Sign up for an account with your provider

Usually, DDNS website’s providers walk you through every step to create your account. It is not hard!

​Step 3. Set up a domain name

Choose a domain name for your device that is unique, easy to remember, and has not been registered by anyone else. This name is very important because, through it, you will be able to access your device from the Internet.

​Step 4. Configure your computer or router

Usually, this task involves entering the domain name you chose, the username, and the password (the one you received from the Dynamic DNS provider) into the settings of your computer or router. Some routers already have a built-in DDNS client that can be configured using the web-based interface, but others may need you to install separate client software.

​Step 5. Update the DNS record

As mentioned before, whenever the IP address of your computer or router changes, the DDNS service will have to update the DNS record to reflect the new IP address. This can be done automatically (by the computer or router) or manually (through a web-based interface or client software provided by your DDNS provider).

​Step 6. Now you can access your device or service remotely

You only need an Internet connection and the domain name you registered with your Dynamic DNS provider. Enter it in your browser, no matter where you are!

​Conclusion

This is how to start using Dynamic DNS. It is not hard, and it is very useful for a variety of needs and applications!

Comments 0 Feedbacks on “TTL (Time-to-Live): Definition & Purpose”Network by Kori

TTL (Time-to-Live): Definition & Purpose

Time-to-Live (TTL) is a method that restricts how long data packets can remain online before a router discards them. It’s a critical component of the Internet, which is why we will explore it in detail in this article. Let’s start.

What does TTL (Time-to-Live) define?

TTL stands for “Time-to-Live.” The DNS record’s TTL setting determines how long a resolver must store a DNS query before it expires. Time-to-Live is frequently used to lighten the strain on your authoritative name servers and to expedite client DNS requests. This page discusses using Linux or Unix command-line parameters to determine a DNS record’s Time-to-Live.

How does it function?

All of the current website records that make up your entire site are stored on your authoritative domain server. Resolver servers verify your website’s name and its contents as the DNS website records travel and hop along the way (or packets). This method involves a lot of servers. When a record queries a server, the Time-to-Live count, which goes as high as 255, deducts 1 from the TTL number. The records continue to go across numerous servers and the Internet infrastructure to a final client (or workstation in the diagram above).

When the Time-to-Live count reaches “zero,” it means that 255 servers have handled the information. Unfortunately, the requested “packet” will be automatically deleted if this occurs. or ceases to “live.” This is referred to as TTL expiry, and if you tried to request a website, your browser would display the message “website not found.”

Recommendations to use TTL

The following significant considerations should be considered while specifying Time-to-Live:

  • The longer the TTL, the fewer times caching name servers must query authoritative name servers.
  • A longer TTL reduces a site’s perceived latency and its reliance on authoritative name servers.
  • The shorter the TTL, the faster the cached record will expire. This enables more frequent queries for the records.

To begin with, a longer Time-to-Live between an hour and 12 hours is acceptable if your website is hosted on a server that does not change IP for months. Fewer lookups would be required, and performance would be better and more consistent. You will need a TTL of between 1 and 10 minutes if you utilize our DNS Failover or Dynamic DNS services. Because dynamic DNS routinely changes your domain name’s IP address, and DNS failover may require you to be ready for the change.

What is “dhcp set ttl”?

On DHCP relay agents, the dhcp set ttl command is utilized. The Time-to-Live value of DHCP Discovery packets is, by default, decreased by 1 when a DHCP relay agent at Layer 3 forwards them. For example, assume that a DHCP Discovery message obtained by the DHCP relay agent has a TTL value of 1. The TTL value drops to 0 if the DHCP relay agent reduces it by 1. The next-hop routing device will discard the message because itsTime-to-Live value is 0. As a result, the DHCP relay agent forwarding the DHCP Discover message to the DHCP server is unsuccessful.

After the message is forwarded at Layer 3, use the dhcp set ttl command to set the Time-to-Live value of the DHCP Discovery message to a non-zero value to confirm that the DHCP server can receive the message provided by the client.

Conclusion

The Time-to-Live value is a crucial component that establishes the data’s validity time. It will indicate if the information is current or needs immediate updating. It facilitates data updating.

Comments 0 Feedbacks on “Anycast DNS – The real improvement of your network”DNS servers by Kori

Anycast DNS – The real improvement of your network

Plain explanation of Anycast DNS purpose

To leverage the benefits of Anycast in the demanding DNS, “Anycast DNS” combines the two technologies. Anycast links a single IP address to multiple DNS servers over the Internet instead of unicast’s one-to-one connection. In the case of a query, a number of servers may respond to the request; typically, the server that is nearest to the user will respond. This lowers latency globally, improves the DNS service’s availability, and offers more defense against DDoS attacks. a straightforward idea that, in contrast to unicast, satisfies the needs of server infrastructures today.

Benefits

  • Simple configuration: You only need to configure it on one server. Additionally, the network as a whole can use these parameters.
  • A faster response time is achieved by directing to the nearest DNS server that is still operational.
  • Additional DDoS protection – In the event of a DDoS attack, only a portion of the entire Anycast DNS set of servers will be affected.
  • It provides reliability. By setting up numerous servers with the same IP address across various regions, Anycast implementation increases DNS reliability. As a result of the DNS servers’ redundancy, the service is now more highly available and dependable.

What if I do not have Anycast DNS?

The process will take longer if you don’t use Anycast DNS. If you aren’t using Anycast Domain Name System, you probably use unicast routing. Anycast and Unicast function differently. The query will be sent to a single server through unicast rather than to several. The client will then need to find a new solution by sending queries to other DNS resolvers, which will influence the time and speed if the resolver is unavailable or not functioning at the time of the request.

Anycast vs. Unicast DNS

Unicast DNS functions in a unique way from other DNS systems. DNS server data is kept on-site at the DNS server’s physical location, in contrast to the subject of our essay today. This implies that regardless of the user’s location, any devices that want to display your site will contact this server. Therefore, if your server is in Asia and the user is in Germany, the response latency will increase. Without a backup plan, the website would also be offline if your DNS server malfunctioned or compromised. This won’t happen, however, if you use Anycast Domain Name System since, in the event that the first server is down, you will be forwarded to the next nearest server.

Conclusion

It is definitely worth trying out Anycast Domain Name System! One efficient method for improving the functionality of your website.