Challenges with current DNS 

Today, DNS has become the backbone of the internet and organization's networks. The DNS is mission-critical infrastructure that no organization can function without. However, despite growing investment in network and information security, attackers still manage to invade the network, and the DNS remains a vulnerable component in the network infrastructure that is often used as an attack vector. Firewalls leave port 53 open and never look inside each query. Let's look at one of the most widely used DNS-based attacks:

DNS spoofing 

When a DNS server's records are altered to redirect the traffic to the attacker's server, the DNS gets hijacked. This redirection of traffic allows the attacker to spread malware across the network. DNS spoofing can be carried out in one of the following three ways:

• DNS cache poisoning: An attacker can take advantage of cached DNS records and can then perform spoofing by injecting a forged DNS entry into the DNS server. As a result, all...