Final answer:
To resolve csmpub resources and act as backup DNS, create a secondary DNS zone on Active Directory DNS servers, configure zone transfers from csmpub DNS server to AD DNS, and adjust firewall settings to allow traffic.
Step-by-step explanation:
To achieve the goals of resolving names of csmpub resources and acting as backup for the csmpub DNS database from the Active Directory‑integrated domain csmtech.local, several steps need to be taken.
- Create a secondary DNS zone on the Active Directory DNS servers for the csmpub domain. This allows the DCs to hold a read-only copy of the DNS records, which is used for name resolution.
- Configure zone transfers between the csmpub DNS server and the Active Directory DNS servers. This is typically done by allowing transfers to the IP addresses of the AD DNS servers and may require creating a transfer policy on the csmpub DNS server.
- Ensure that firewall settings allow the required traffic between these servers, specifically DNS traffic (port 53), so they can communicate and transfer data.
By following these steps, the Active Directory domain controllers will also serve as backup DNS for the csmpub domain, providing redundancy and improving name resolution efficiency.