Domain Name Security Extensions (DNSSEC) is a great way to add an extra security layer to your domains. It is an advanced DNS feature, which attaches digital signature (DS) records to the DNS information. So, that way, it can establish the authenticity of the source domain name.
The purpose of which it is designed is to protect Internet users from falsified DNS data. An example of such a case can be a misleading or malicious address rather than the actual address you wanted to visit.
Once you enable DNSSEC, the DNS lookups will have to use a digital signature to prove that the origin of the site’s DNS is accurate. It is very helpful for preventing some types of attacks. In case the digital signature does not match, the browsers will not open the site.
Check the following link to learn more about the DNSSEC feature!
Continue reading “What does DNSSEC mean?”
The purpose of DNS tunneling attack
DNS tunneling is a sort of Domain Name System attack, as the name implies. It employs a client-server mechanism to push malware across a tunnel. In addition, it is a black hat approach for establishing a covert conduit into a victim’s machine or network.
The channel constructed allows embedding a malicious payload within DNS queries, allowing attackers to take advantage of DNS traffic’s largely unconstrained flow—especially in settings where practically all other communication is controlled.
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What is the purpose of a Firewall?
A firewall acts as a sentinel, detecting and reacting to dangers. First, it keeps an eye on traffic to look for unusual activity, malware, or unauthorized access attempts. Then it bans communications from unknown sources and dubious sources.
How does it work?
A firewall generates a security filter to manage traffic, whether it be hardware, software, or both. It thoroughly examines the traffic at each computer’s entrance point (ports). This is because communication occurs with external devices through such ports.
In order to perform activities such as filtering, allowing, and blocking, we need to set firewalls. They also examine data packets delivered across networks for attack vectors, malicious code, and other potential threats. After a firewall has reviewed traffic, it will only accept the inbound connections that you have selected to receive, as well as those that are deemed safe. Data packets and connections that are potentially dangerous will be refused. To put it another way, it will accept only trustworthy sources (IP addresses). In addition, let’s not forget that IP addresses are identifiers of sources and computers.
Key Advantages of a Firewall
In this computer era, we consider that the use of a Firewall is mandatory. There are many benefits to implementing it, some of which are:
- Prevent initial malware and phishing
- Provide monitor Traffic
- Find malware devices on your network
- Better privacy and security
Different Types of Firewalls
We can deploy different types of firewalls depending on the needs of the users. We’ll take a look at the most popular of them.
- Software Firewall provides more granular control, letting you use one function or program while blocking others. Unfortunately, this type can eat up a lot of your system’s resources, notably RAM and CPU.
- Hardware Firewall acts as a gateway between the internet and internal networks, preventing traffic queries and data packets from entering the private network from unknown sources.
- Packet filtering entails analyzing and distributing a tiny amount of data in accordance with the filter’s specifications.
- Proxy service is a network security mechanism that protects users by filtering communications at the application layer.
- Stateful inspection is a type of dynamic packet filtering that looks at active connections to see which network packets should be let over the Firewall.
- Next-generation firewall (NGFW) improves on the basics by adding features such as deep packet inspection, encrypted traffic inspection, intrusion prevention technology, antivirus, and so on.
You now appreciate the importance of a Firewall. It has the ability to allow teams to focus on other activities while also establishing a secure proactive, rather than reactive, network experience for everyone in your company.
DNS load balancing is a handy feature for load distribution. This method is used by an increasing number of businesses, both large and small. But how does it work, and what are the benefits? We’ll get to that later in the article.
DNS load balancing – what is the meaning?
To begin, we will define this method. As we already know, DNS is a system that connects a domain name to its IP address. A domain is stored on a single server by default. However, if your site receives a lot of traffic, this can cause it to crash. To prevent this, we use load balancing. To put it another way, this feature redirects DNS queries to multiple web services.
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What does a DDoS attack mean?
Distributed Denial of Service, which is for short, called DDoS, is a cyber-attack. It’s performed to disrupt essential targets like a network, system, or server. That is achieved by overwhelming them with lots of traffic, which is coming from many devices. The word “distributed” refers to the many various sources that are used to achieve the attack. When the target is down, the DDoS attack is complete. The outcome is simply not allowing any user to access it.
The DDoS attack can be of several kinds. Techniques can modify, or they could be mixed and accomplish a stronger hit to the target. Overall, any DDoS attack operates by infecting devices. If there are more connected to the Internet, more of them are going to attack the victim. This happens even globally and from any kinds of compromised sources like computers, servers, IoT devices, wearables. The target is not able to handle the traffic. It becomes sluggish and eventually becomes completely drowned.
Signs of DDoS attack
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What is a Secondary DNS service?
A Secondary DNS service is an addition to your Primary DNS service that provides extra name servers that have a copy of the zone file. Those servers will store the DNS records for your domain and resolve the domain when someone queries them. That way, they provide redundancy, better performance, hand increase your domain availability.
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Ping of Death. It sounds as dangerous as it is. It can bring down your server and keep it that way for a long time using a simple tool like the ping command. A bit of modification of the packets of data and your server might have a serious problem.
What is Ping of Death?
Ping of Death or PoD is a Denial of Service attack (DoS attack) that uses a vulnerability connected to the ping command and the packet size. The attackers use the ping command and send data packets that are oversized. The normal size of an IPv4 packet of data, with its IP header, is 65 535 bytes, so everything that is above, like 65 536 bytes, will cause problems.
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All types of cyberattacks are threats to take seriously. But DNS attacks directed to hit your DNS (domain name system) are like lethal RIP bullets impacting your system. Your online business can be fully damaged!
DNS cache poisoning.
DNS Cache Poisoning (DNS Spoofing) hits through the DNS resolver servers. They can temporarily save a copy of the DNS records related to domains in their cache memory. Those records get cached the time established in their time-to-live (TTL).
Continue reading “Most popular DNS attack types.”
SSL certificate explained
An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates a website’s identity.
Secure Sockets Layer is an information file that generates an encrypted connection browser-server cryptographically. Once they connect, the SSL certificate is validated. That is the way to achieve protected communication between them. So, as a result, only the user and the website could access the user’s info, such as email address, payment details, etc.
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DNS Spoofing explained
You can find DNS Spoofing, also called DNS poisoning. Don’t get confused. It is the same thing. It is a technique applied by hackers which includes imitating a device or a user. That is applied as a cover, with which the disruption of the regular flow of traffic or reaching protected data is not such a difficult task.
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The virtual private network (VPN) is like an invisible protective cloak that you put on, and the origin of your request gets hidden away. For those of you that this comparison is not enough, let us explain to you in detail what a virtual private network (VPN) is.
Virtual private network (VPN)
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