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31, Mar 2022
What is the purpose of Dynamic DNS?

Have you ever heard about Dynamic DNS? It is an absolutely incredible service. Why? Because it lets you connect to your gadgets over the Internet using a simple domain name. In our article, we will take a detailed look at it, how it functions and why it is so beneficial.

Dynamic DNS – what does it mean? 

Dynamic DNS (DDNS) stands for Dynamic Domain Name System. It’s a great way to update your name server automatically and regularly. Whenever they change, it changes IP addresses and their related A (IPv4) and AAAA (IPv6) records. It saves you the time and effort of manually doing this process.

Client IP addresses are continually changing at Internet service providers (ISPs). As a result, they face a significant problem in managing them so that they do not run out. Every device that connects to its network needs its IP address.

Perhaps you are unaffected by these frequent IP changes as a typical home Internet user. Businesses, on the other hand, are a different matter. If a company provides a service -or numerous services- over the Internet, such IP address changes will almost certainly harm its servers. In addition, every update increases the possibility that users requesting the service will be denied access because they are using an old, invalid IP address.

How does it work?

Dynamic DNS continuously monitors IP addresses for changes. When a change occurs, the DDNS automatically updates the new IP address.

Consider sharing service from a server that is connected to the Internet. It must also be connected to the internal network, and it will use a network address translation (NAT) router to communicate with the Internet. This NAT router assigns an internal IP address to the server. Then it must enable its external availability via port forwarding and obtaining a Portex (external port) and an Ipex (internal port) (external IP address). Your service will already be visible at this stage. Users will have easy access to it over the Internet.

Why is it advantageous?

The following are some of the benefits that DDNS can provide:

  • Dynamic DNS is a low-cost alternative. There are both commercial and free DDNS providers available. It is, nevertheless, less expensive than purchasing static IP addresses for your company’s equipment.
  • Access to your server or website without interruption. It makes no difference if your IP address changes. Your website will be accessible to your visitors.
  • A basic and straightforward method. All you have to do now is sign up for the service, and the program will be installed automatically. Ready!
  • You’ll get notified in real time if the DNS server’s IP address changes.
  • Remote access or VPN connection is seamless and straightforward for employees who work from home.
  • Installing security cameras will necessitate a strong and consistent Internet connection. They will continue to function 24/7, thanks to Dynamic DNS.

Best Dynamic DNS providers

If you’ve already chosen that Dynamic DNS is the way to go, here are a few respectable companies to look into:

  • ClouDNS offers a free Dynamic DNS subscription, which may be an excellent place to start for many people. It’s easy to set up on various operating systems and network devices.
  • FreeDNS provides a free Dynamic DNS service for hosting domains and subdomains and web forwarding and URL cloaking.
  • One other great DNS provider is ChangeIP. For IP mapping to a subdomain on their system, this hosting business offers both free and premium solutions and Dynamic DNS to any domain for a fee.

Conclusion

We can infer that Dynamic DNS can help you save time and money. It is a really useful technology. It may even be the only reasonable answer to a problem in some situations. Assume you wish to deliver services or connect and operate many devices, such as CCTV cameras, over the Internet. Take a look!

10, Mar 2022
What does a DDoS attack mean?

What exactly is a DDoS attack?

A DDoS or Distributed-Denial-of-Service attack is a form of cyber attempt. It means that the goal of a DDoS assault is to overload a server, computer, or network with massive amounts of traffic generated from various sources. Then, when the target fails, its services or access to it for regular users is denied.

When cybercriminals succeed in shutting down your company, it will have an impact on your revenues. Furthermore, it will increase your costs for resolving the issue and harm your reputation. In addition, a DDoS attack might be used as a distraction by thieves in preparation for another data breach attack. So, if your website is down for an extended period of time, your search engine ranking may suffer.

How does it work?

DDoS attacks are mostly caused by devices connected to the Internet. Malware infects many appliances, computers, and IoT, and the attacker gains control of them. Bots or zombies are terms commonly used to characterize such devices, and a botnet is a collection of them.

The hacker is now ready to launch the attack after establishing the botnet. They’re all controlled from afar, and each one is given orders. All of the zombies or bots that are affected send requests to the victim’s IP address. Eventually, the network or server will become overburdened and unable to handle the load. Because each bot seems to be a standard Internet device, distinguishing between legitimate and malicious traffic is difficult.

DDoS attacks types

We can divide DDoS attacks into three categories:

  • Attacks on the application layer — They overwhelm applications with bogus requests.
  • Assaults that deliver a large amount of harmful traffic to a device, website, or server are known as volume-based attacks. There are ICMP, UDP, and spoofed-packet flood attacks, for example.
  • DDoS attacks at the network layer or protocol level send vast amounts of packets to their target network infrastructures and tools. SYN floods and Smurf DDoS are two well-known protocol attacks.

For all forms of attacks, the purpose is always the same. That is to make the target’s resources sluggish and unresponsive at all times.

How can you defend yourself against a DDoS attack?

  • Always keep your systems up to date. If you run your own DNS server, you must keep it up to date at all times. You should keep an eye out for potential flaws or malfunctions and update your software on a regular basis. 
  • Monitoring of traffic. For stopping a DDoS attack, technology that constantly monitors data and detects abnormal patterns and abrupt traffic surges is critical.
  • Have load balancing technology. It distributes traffic by routing it from one server to another, attempting to strike a balance that keeps servers from becoming overburdened.
  • Invest in anti-DDoS software. You need modern technology to increase your defense against DDoS attacks. A combination of tools, rather than a single one. It will cost you money, but it will be much less than the cost of dealing with the aftermath of an attack.

Conclusion

DDoS attacks are a significant problem. They are a successful method of disrupting web services. They have the ability to take down your website for an extended length of time. But for this not to happen, prepare yourself!