When deploying Cognitive Services (including OpenAI) behind a VNET, you need to configure additional connectivity and network settings to allow access from external resources such as OpenAI Studio. Here are some steps you can take to address the "Access denied due to Virtual Network/Firewall rules" error:
Virtual Network Integration: Ensure that the Cognitive Services | OpenAI resource is deployed within a Virtual Network (VNET) and is properly integrated with it. You can configure VNET integration during the deployment process or by modifying the existing Cognitive Services resource.
Network Security Group (NSG) Rules: Review the Network Security Group rules associated with your VNET. NSGs act as firewalls and control inbound and outbound traffic. Make sure you have appropriate inbound rules that allow the necessary communication between OpenAI Studio and the Cognitive Services resource.
- Open the NSG associated with the subnet where Cognitive Services is deployed.
- Create inbound security rules that allow the required ports and protocols for communication with OpenAI Studio. This could include HTTP (port 80), HTTPS (port 443), or any other custom ports or protocols used by the Cognitive Services resource.
- Ensure that the rules allow traffic from the IP ranges or specific IP addresses used by OpenAI Studio or the Chat Playground.
Private Endpoint (Optional): Consider using Private Endpoints to securely access the Cognitive Services | OpenAI resource over a private IP address. Private Endpoints provide secure connectivity within the VNET without exposing public endpoints. With Private Endpoints, you can access the Cognitive Services resource securely even when it is behind a VNET.
- Create a Private Endpoint for the Cognitive Services resource.
- Update the NSG rules to allow traffic from the Private Endpoint IP address or range.
- Configure OpenAI Studio or the Chat Playground to connect to the Cognitive Services resource using the Private Endpoint.
By configuring the appropriate network settings, including NSG rules and possibly Private Endpoints, you should be able to resolve the "Access denied due to Virtual Network/Firewall rules" error and allow OpenAI Studio or the Chat Playground to access the Cognitive Services | OpenAI resource deployed behind the VNET.