How can a DNS tunneling attack be mitigated?

Last Updated: Oct 23, 2020
IT Exam Items Repository › Category: CCNA CyberOps › How can a DNS tunneling attack be mitigated?

How can a DNS tunneling attack be mitigated?

  • by preventing devices from using gratuitous ARP
  • by using a filter that inspects DNS traffic
  • by securing all domain owner accounts
  • by using strong passwords and two-factor authentication

Explanation: To be able to stop DNS tunneling, a filter that inspects DNS traffic must be used. Also, DNS solutions such as Cisco OpenDNS block much of the DNS tunneling traffic by identifying suspicious domains.

Related exam: Modules 13 - 17: Threats and Attacks Group Exam

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