• Tag Archives DNS
  • Key DNS terms explained in detail

    Today we will explore the essential DNS terms that you need to know. DNS is an abbreviation of Domain Name System. Its function is to link domain names with their corresponding IP addresses. The Internet functions as it does today because of this decentralized naming system. But what are the other vital DNS terms? Let’s now focus on them.

    DNS record

    First, we will stop at the DNS records. They contain DNS-related information and instructions. A single domain typically has multiple DNS records, each revealing domain-related settings. For example, one may provide information about the IP address (A record or AAAA record). At the same time, another may point to a domain-related service, such as an email server (MX record). In addition, every DNS zone contains a zone file that contains the entire collection of DNS records.

    DNS zone

    The DNS zone is the administrative component of the DNS namespace. A different DNS administrator manages each DNS zone. As a result, the DNS system is regarded as decentralized. A domain name and a DNS zone are frequently confused as the same thing. However, this is incorrect. For example, a single DNS zone could be contained within a single domain. Other cases, on the other hand, are more common. When a domain has multiple DNS zones, it is evident that they are not all equal.

    DNS server

    DNS servers are classified into two types. The first type of DNS server is authoritative, which stores all DNS data (DNS records) and provides information to the following type of DNS server. Recursive DNS servers are the second type (DNS resolvers). Their primary function is to receive the DNS query and look for an answer. DNS resolution is a comprehensive process, and their role is critical.

    Network Protocol

    A protocol is a set of instructions for formatting and processing data in networking. Computers have a common language known as network protocols. Even if the software and hardware used by the computers in a network may be very dissimilar, the usage of protocols allows them to communicate with one another.

    Similar to how two humans from different parts of the world may not speak each other’s original languages but can nevertheless communicate through a common third language, standardized protocols are like a common language that computers can utilize. For example, a computer can communicate with another computer if both of them employ the Internet Protocol (IP).

    In addition, there are different types of protocols:

    • TCP (Transmission Control Protocol)
    • UDP (User Datagram Protocol)
    • FTP (File Transfer Protocol)
    • IP (Internet Protocol)
    • ICMP (Internet Control Message Protocol)
    • HTTP (Hypertext Transfer Protocol)
    • SMTP (Simple Mail Transfer Protocol)
    • etc.

    Dynamic DNS

    Your IP address is automatically updated using Dynamic DNS (DDNS) whenever it changes. The Internet Service Provider (ISP) most frequently changes your IP address to a different one. It’s easy to understand why. They have broad networks, and this step makes management easier for them. Dynamic DNS implementation is a wonderful option if you have CCTV security cameras.

    DNS propagation

    The last teminology from our DNS terms list is DNS propagation. Changes to your domain, like changing the nameservers or A record values, typically take an hour or two to accomplish. However, depending on several factors, this can occasionally take up to 72 hours (TTL settings)

    DNS propagation is the process that allows these DNS updates to spread across the internet.

    Because ISPs (Internet Service Providers) all over the world need to update their caches with the DNS changes you’ve made, the timing of this procedure will vary. Each ISP determines the rate at which these updates are made. This means that propagation cannot be “sped up”.

    Conclusion

    The Domain Name System is frequently the most challenging aspect of learning how to configure websites and servers. You can diagnose issues with access configuration for your websites and gain a deeper understanding of what happens in the background by learning how DNS works.


  • What you don’t know about Dynamic DNS?

    What exactly is the Dynamic DNS idea?

    DDNS refers to Dynamic DNS, or, more precisely, Dynamic Domain Name System. It is a service that associates IP addresses with online domain names. You can access your home computer using a DDNS service from anywhere in the world.

    In the same way that the internet’s Domain Name System (DNS) advertises a public name to potential users, DDNS accomplishes a similar goal.

    However, DDNS is also made to support dynamic (changing) IP addresses, such as those given by a DHCP server, in contrast to DNS, which only functions with static IP addresses. Because home networks typically acquire dynamic public IP addresses from such an ISP, DDNS is a suitable fit for them.

    How does DDNS operate?

    A DHCP server that operates on a system or provider-based software is used to implement several DDNS services. When changes are discovered, the DDNS client notifies resolvers of any required arguments for http or https URL queries. In addition, when DDNS is set up, the program or DHCP server notifies all systems of any changes to an application’s or domain’s IP address. This guarantees that service is never interrupted and that updates to IPs are immediately disseminated.

    Why is using Dynamic DNS essential for you?

    There are several advantages. Here are a few illustrations:

    • You keep browsing the internet. It will reduce downtime by automatically updating the A or AAAA record. Therefore, accessing gadgets or services online will still be possible.
    • Incredibly simple. For example, IP cameras for security only require a single installation. The username and password are required to configure the Dynamic DNS service on your router.
    • Static IPs have higher costs. If you have a lot of devices, it will be far more economical to pay for one DDNS service. Each static IP address could cost more money to purchase.
    • Simple, automatic configuration: When using a dynamic IP address, the DHCP server assigns the device the following available IP address. You are not required to do anything.
    • Improved security: A dynamic IP address makes it more difficult for a possible threat to target your software.

    Dynamic DNS provides an appropriate and reasonably priced alternative to purchased static IP numbers.

    Negative aspects of a Dynamic DNS

    • May restrict remote access: Using a Dynamic DNS could make it difficult for your program to establish a connection, depending on your remote access software. Avast SecureLine VPN and other VPN services excel in this area.
    • Less precise geolocation: If your IP address is dynamic, your geolocation services may need to be fixed since you may continue to use an address that is no longer accurate for your current location.

    FAQ

    What distinguishes Dynamic DNS (DDNS) from DNS?

    DNS has a capability known as Dynamic DNS. The IP addresses and name mapping were manually entered in static early DNS systems. The IP mappings are automatically updated by Dynamic DNS whenever they change.

    How can I locate my outside IP address?

    Enter what’s my IP address into Google.

    Is Dynamic DNS synonymous with port forwarding?

    No! Port forwarding allows a service to be accessed via an Internet address (external address). DDNS gives this external address a name and updates it if the address changes.

    Do DDNS and DNS share the same port?

    Yes. This is udp/tcp port 53.

    Conclusion

    We can all agree that DDNS is a precious service. So. it’s good to give it a chance and try it!