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How to Prevent DNS Tunneling?

Domain name systems or DNS is a protocol that translates URLs into IP addresses. DNS tunneling is a type of cyber-attack launched against company networks that encodes the data of other programs through a client-server model. It is a misuse of DNS. A DNS server links the twelve digit IP addresses with the domain name, the tunneling is an attempt to seize the protocol. There should be external network connectivity, and access to an internal DNS server with network access for it to work. A DNS determines how we share information online, but it is vulnerable in terms of security. Hackers use DNS as an established route to data-stealing for malicious purposes.
Hackers use DNS tunneling to own a network. It has been around for almost 20 years. Morto and Feederbot malware have been used for DNS tunneling.
In tunneling, hackers use the established pathway of DNS to gain confidential information of the company for malicious purposes. Often, email addresses serve as a valuable source for data breaching.
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