What does DNSSEC mean?

DNSSEC meaning

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.

What is the way DNSSEC works?

The main goal of DNSSEC is to protect Internet users from forged DNS data through validating digital signatures inserted in the data. 

Whenever a user wants to enter a domain name in a browser, the resolver verifies the digital signature.

The digital signatures in the data and those that are in the master DNS server have to match. Only then is the data allowed to access the user computer, which is making the request.

These digital signatures are making sure that the user is communicating with the website that he intended to visit.

DNSSEC implements a system of public keys and digital signatures to validate the information. To alongside existing DNS records, it adds new records. These new type records are DNSKEY and RRSIG, which can be retrieved such as the more common records, like A, CNAME, and MX.

They are implemented to digitally “sign” a domain with a method named public-key cryptography.

Nameserver, which is signed, has a private and public key for every zone. Every time a user makes a request, it sends data signed with its private key. Then the recipient unlocks it with the public key. If someone attempts to send misleading information, it won’t be able to unlock appropriately with the public key, so the recipient will identify that the data is false.

What does it protect against?

The fundamental protection that DNSSEC can provide is to limit third parties from falsifying records. It also guarantees the integrity of the domain by restricting:

False zones: DNSSEC can be beneficial for protecting versus malicious DNS attacks that make unfair use of the DNS system and give imitation results for zones. They may not even exist actually, and attackers benefit from gaps between zones. DNSSEC provides mechanisms to avoid gap usage and secures the whole zone. That is also called the authenticated denial of existence. 

DNS Cache Poisoning: This is a form of man-in-the-middle attack. Criminals flood a DNS resolver with fake DNS data. In some cases, these attacks can increase to a large number and set a false end result inside the cache of the DNS resolver. As a result, the DNS resolver gives this malicious and false web address to every user that is requesting that specific website. This continues until the TTL (Time-to-Live) expires.

DDoS attack – Everything you need to know

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.

How does it work?

Internet-connected devices are the ones, which carry out DDoS attacks.

These networks include computers and other devices like IoT devices that are infected with malware. This way, for the attacker, it is possible to take control of them and operate remotely. Every one of these devices is referred to as zombies or bots. In addition, a group of them is called a botnet.

When a botnet is built, the attacker can proceed to perform the attack. Each bot receives instructions remotely.

The victim’s network or server, which is affected by the botnet, sends with each bot request to the IP address of the target. Like that, the network or server likely gets flooded. The result is a denial of service to accessing regular traffic.

The reason for which separating regular traffic and attack traffic is so difficult is simple. Every bot is presented as a legitimate Internet device.

The motive for DDoS attacks

DDoS attacks are gaining more popularity and becoming the most common kind of cyber threat. The number of attacks performed is growing rapidly. 

The motives that are behind the attack are mainly:

  • Shakedown – The ones that apply DDoS attacks or using them as a threat and like a method for forcing their target to pay them. 
  • Business disputes – Companies strategically can use DDoS attacks to take down the site of an opponent.
  • Philosophy – These people are called “hacktivists”. Their targets are usually sites that implement an ideology, which the attackers disagree with.
  • Boredom – These are cyber vandals who are searching for an adrenaline rush. They typically use pre written scripts to start DDoS attacks. 

Keep yourself safe from DDoS attack. 

If you want, there is a method to defend yourself from DDoS attacks. In case your name servers are the main target of the DDoS attack, there is a way to protect them. What you are going to need is a DDoS protected DNS. The essential of it is that it is a network, which contains a strategically located in various places servers. So they are able to balance the load intelligently. So providers of DDoS protected DNS can mitigate the traffic successfully. 

Also, if one server completely goes down, your domain will continue to resolve, thanks to the other servers.