Do you understand DNS attacks and is your network protected from them? DNS was created primarily to answer requests accurately and efficiently, not to speculate about their purpose. As a result, DNS is likely to be hacked and has serious vulnerabilities.
In a Domain Name System (DNS) attack, a malicious actor tries to attack the network’s DNS or use its built-in advantages to launch a more massive attack. A well-planned DNS attack has the potential to destroy an organization. The four main types of DNS attacks that will be covered in this article lead to enterprise cybersecurity breaches in 2022.
DNS tunnel
Encrypting data from other applications or protocols in DNS requests and responses is known as DNS tunneling. Simply put, it consists of loads of data that can steal DNS servers and allow hackers to take control of the remote server and its applications.
DNS tunneling often relies on the external network connection of the hacked system as a backdoor into an internal DNS server with network access. Controlling a server and a domain, acting as an authoritative server and executing server-side tunneling and data payload execution programs, is also necessary.
DNS amplification
Distributed Denial of Service (DDoS) occurs when DNS amplification is hacked and floods the target with DNS reply traffic allowing them to use open DNS servers made available to the public.
However, a DNS lookup request is sent by the hacker to the open DNS server and tricks the source address to get the destination address. The DNS record’s reply was moved to the new target, but it was influenced by the attackers when the DNS server made it available.
DNS flood attack
User datagram protocol (UDP) flooding can be done using DNS flooding attacks. Hackers launch fake DNS request packets at very high packet rates before spoofing a huge range of IP addresses.
The target’s DNS servers start responding to all requests because they appear to be valid. A large number of requests can destroy the DNS server. Most DNS attackers use a lot of network resources, modeling the specific DNS infrastructure that it breaks or crashes and as a result, Internet access is cut off.
DNS spoofing
DNS spoofing, also known as DNS cache poisoning, is a method of using updated DNS records to reroute online traffic to a malicious website that appears to be the desired location. Users are prompted to enter their account when they arrive at the fake location.
Essentially, they provide an opportunity for attackers to steal specific access credentials as well as specific sensitive information entered into a fake login form after they enter the information. Likewise, these harmful websites are used to download viruses to the user’s device and that allows the hacker to perform a hacking procedure to get the data from the user’s device.
Final thoughts
There are several ways to mitigate DNS attacks. One way is to rank limiting DNS queries. This will prevent a DDoS attack as it takes time to reach the query limit. Another way is to use feedback policies.
This will allow administrators to control what information is given in response to DNS queries. For example, an administrator can choose to provide information only about the A record, but not the CNAME record.
Finally, another way to mitigate DNS attacks is to use an intrusion filter. This will filter illegal DNS traffic before reaching the DNS server. These are just some of the ways to help mitigate major DNS attacks.
Categories: How to
Source: vothisaucamau.edu.vn
