Hello,
As far as I know, you can't do that. You have to set up SSL with a certificate in nginx. Alternatively, you can use TCP forwarding and skip nginx but you will lose the headers that your backend probably requires.
If you must use a proxy, the client will have to connect to the proxy via HTTPS. If your backend is on a trusted internal network, nginx can do the SSL termination and you can then proxy to it via HTTP and save the cost of a second HTTPS connection. If not, you will need to use HTTPS on both ends. We use the former with one front end nginx server doing SSL terminations and proxying over trusted network via HTTP to different backends.
As far as I know, you can't do that. You have to set up SSL with a certificate in nginx. Alternatively, you can use TCP forwarding and skip nginx but you will lose the headers that your backend probably requires.
If you must use a proxy, the client will have to connect to the proxy via HTTPS. If your backend is on a trusted internal network, nginx can do the SSL termination and you can then proxy to it via HTTP and save the cost of a second HTTPS connection. If not, you will need to use HTTPS on both ends. We use the former with one front end nginx server doing SSL terminations and proxying over trusted network via HTTP to different backends.