I configured tinyproxy, on one server, but I want it to forward all its requests to the tinyproxy proxy on another server, that is, the tinyproxy in the middle is just a springboard. I did not find the corresponding configuration item in the tinyproxy document, only reverse proxy, or written dead by domain name. What do I need to do to forward all requests from this port to the proxy of another server without modifying the firewall rules?