ESP8266 star typology without MQTT

I would like to know if any developer can help me with my WEB-SERVER design of ESP8266 project and able to manage many of these without the need of opening many port on my router. Currently, I have ESP8266 with web-server HTML application built-in in these modules. I would like to manage many of these but currently I need to open a port for each WIFI module. I have built-in a DEVICE LIST that can see all my other web-servers on my network. I use mdns to discover other modules.