An administrator configures DNS injection and rewriting in a manual NAT rule on an FTD device. What is the primary purpose of enabling DNS translation in a NAT rule?
DNS translation rewrites IP addresses inside DNS response payloads so clients connecting through NAT reach the right address.
Why this answer
DNS translation ensures that when an internal client queries a local DNS server for an external name that resolves to a private IP (due to NAT), the FTD rewrites the DNS A-record response to the public IP.