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What is DNS Tunneling?

DNS tunneling is a technique used to exfiltrate data by encoding it within DNS queries and responses. Attackers can bypass firewalls and other security controls by using DNS as a covert communication channel.

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Related terms

Advanced Persistent Threat (APT)Data ExfiltrationFirewall Egress FilteringSteganographyVPN Egress Point Monitoring
DNS Sinkhole DOM-Based XSS

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