Hello, I have Proxmox server with several VMs on it. One VM is Index where all traffic forwarded to and NGINX installed on it which manages and drives traffic to other VMs depending on domain. One of the VMs is BigBlueButton (BBB) which is based on freeswitch, Kurento, Webrtc, XMLRPC, SIP etc. and each of these modules have their own TCP/UDP ports. By routing all possible ports by NGINX wasby trecords - Other discussion