Community Training Classes & Labs > DNS Services Index

5. Validating Resolver

Configure a validating resolver cache on the BIG-IP® system to recursively query public DNS servers, validate the identity of the DNS server sending the responses, and then cache the responses.

After completing this lab students will entirely offload DNS queries from internal masters.

../../_images/class2_validating-resolver.png ../../_images/class2_validating-resolver2.png

Navigate to DNS ›› Caches : Cache List


Create a validating resolver cache according to the table below:

Setting Value
Name validating-resolver_cache
Resolver Type Validating Resolver
Answer default zones Checked - Enabled


tmsh create ltm dns cache validating-resolver validating-resolver_cache answer-default-zones yes