How Does DNS Tunneling Work?
DNS tunneling works by encapsulating data in DNS queries and responses to create an encrypted communication channel between a corrupt machine and an attacker-controlled remote server. The malware on the infected device converts data into subdomains of DNS queries, which are subsequently forwarded to the attacker’s DNS server. This server decodes the data and can return commands encoded in DNS replies. Because DNS traffic is often permitted to travel through firewalls and security devices without being thoroughly examined, DNS tunneling allows the attacker to avoid security measures, steal data, and maintain command and control over the infected system.
Cyber Security – Introduction to DNS Tunneling
DNS tunneling is a process where an attacker encodes data in DNS queries and responses to communicate between a compromised system and a remote server. This technique involves the Domain Name System (DNS), which is typically used to convert domain names into IP addresses.