Nowadays, most people and companies use Public DNS services instead of Private DNS server. This has its dangers. But before we find out what they are and why it is so important to switch to Private DNS, let’s see what a DNS server actually is.
-
You may have heard of DNS cache as a website owner or regular internet user. But do you know what it is and how it affects your online activities? In this blog post, we will dive into the world of DNS cache, explaining what it means, how it works, and why it’s essential.
What is DNS Cache?
DNS stands for Domain Name System, which is responsible for converting human-readable domain names into IP addresses that computers can understand. Every time you visit a website, your device sends a DNS query to a DNS resolver, which then provides the IP address of the website’s server. DNS cache, therefore, refers to the temporary storage of this information on your device, making it quicker to access the same website again in the future.
Why DNS Cache Matters?
The DNS cache is an essential part of the internet infrastructure, as it helps reduce the load on DNS servers and speeds up web browsing for users. Without a it, every website you visit would require a DNS lookup, which would slow down the browsing experience significantly. However, the cache is not infallible and can sometimes cause problems if not managed correctly.
Issues
One issue with the DNS cache is that it can become outdated or stale. When a website changes its IP address, the cache still holds the old address until the cache entry expires or is flushed. This can lead to connection issues or the inability to access the website altogether. To resolve this issue, you can clear your DNS cache manually or wait for it to expire naturally.
Another issue with a DNS cache is that it can be poisoned or hijacked by malicious actors. DNS poisoning is a technique attackers use to redirect users to a fake website or steal sensitive information. To prevent this attack, it’s essential to keep it up to date and secure.
How to Manage it?
Managing it is relatively easy, and there are a few things you can do to ensure it’s working correctly:
- Clear your DNS cache regularly: This can be done by typing “ipconfig /flushdns” in the command prompt on Windows or “sudo dscacheutil -flushcache” on macOS.
- Increase the cache size: By default, the DNS cache size on Windows is limited to 100 entries. You can increase the size of the cache to store more entries by modifying the registry.
- Use a secure DNS server: Using a reputable DNS server that implements DNSSEC (Domain Name System Security Extensions) can help prevent DNS poisoning and other DNS-related attacks.
Conclusion
In summary, the DNS cache is a temporary storage that stores DNS lookup results to speed up web browsing. While it’s an essential part of the internet infrastructure, it can cause issues if not managed correctly. By understanding how it works and implementing best practices, you can ensure a faster and more secure browsing experience.
-
DNSSEC is an absolutely beneficial approach because its primary goal is security. In other words, it’s a DNS protocol Security Extension. So if you want to learn more about it and how it works, you are in the right place. So let’s start.
DNSSEC – meaning
DNSSEC stands for Domain Name Security Extensions. It is an excellent technique to give your domains an extra degree of security. DNSSEC service is an advanced DNS feature that associates digital signature (DS) records with DNS data. As a result, the legitimacy of the original domain name may be established.
-
What is the purpose of TCP monitoring?
The TCP monitoring report displays the cumulative efficiency of all TCP connections over time. It will wait for the TCP connection to be established for any TCP application before sending the request string and watching for the server to deliver the desired content. The health check will be successful as soon as a TCP connection has been established, even if no client request and server response are defined.
-
Do you desire more information on DNS attack types? You are in the appropriate location if the answer is yes. Today’s post will examine the four most prevalent ones and how to combat them. However, let’s first define what a DNS attack is.
What does a DNS attack aim to achieve?
What precisely falls under a DNS attack? The term refers to a class of cyberattacks in which malicious hackers target an organization’s DNS servers, which hold desired domain names. They can carry out the assaults described below when they possess specific domain names. Bad actors may also search a system for holes they may use to their advantage.
4 most common DNS attack types
- DNS cache poisoning
DNS spoofing, also known as DNS cache poisoning, refers to operations that aim to smuggle altered entries into name servers’ DNS caches. Attackers change the relationship between domain names and their corresponding IPv4 or IPv6 addresses in this way, causing visitors to access a phony website that is typically dangerous.
-
Monitoring service – What is it?
Monitoring service is a large category of goods that allow analysts to evaluate whether IT equipment is online and working at expected levels while also correcting any discovered issues. It provides detailed information about the status of your servers, which you use for a variety of services such as web, email, DNS, and others. Monitoring service tools range from simple inspections to more powerful instruments that may assess a product’s performance in great detail and even automate repairs when faults are discovered.
Amazing Monitoring service plans that are worth your attention!
-
The topic for our discussion today is DDoS protected DNS. This is absolutely incredible service. We will see why, what is its purpose, and where you can find it. But first, let’s explain what exactly is a DDoS attack.
What is a DDoS attack?
To easily understand the purpose of the DDoS protected DNS, we should explain what DDoS attacks are. They are a type of cyberattack in which bad actors use a variety of tactics to produce a large amount of traffic directed at a target in order to overload it. When the target can no longer reply to typical queries, it will deny service to newly connected users.