The article offers a comprehensive guide on troubleshooting network connection errors encountered when connecting a local application SDK to a remote Couchbase cluster, specifically using Azure for demonstration. It details the process of installing a Couchbase cluster on Azure, updating firewall rules for connectivity, and confirming the cluster's operational status. The article introduces the Couchbase SDK Doctor tool, which diagnoses connectivity issues by mimicking the connections made by Couchbase SDKs, and highlights the use of alternate addresses and ports to facilitate external communication with the cluster nodes. By updating alternate addresses through REST API calls and rerunning the SDK Doctor, the article demonstrates how these steps can resolve network errors, ensuring successful connections between the application and the Couchbase cluster.