What are two recommended approaches to stop DNS tunneling for data exfiltration and command and control call backs? (Choose two.)

A. Use Cisco Umbrella

B. Use next generation firewalls.

C. Block all 'TXT' DNS records.

D. Use intrusion prevention system.

E. Enforce security over port 53.






 

Suggested Answer: AE



This question is in 350-701 exam 
For getting CCNP Security Certificate


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