How to link containers in a "icc=false" bridge?

I'd like to connect several services with a reverse proxy. But the services can't communicate with each others.

I'm using a compose file for each service.

I'm trying to use the same external bridge (icc=false).

After that, I don't understand how to allow the different communication with the reverse proxy. I've tried links and external_links but it doesn't work. Then, I have read that link will be deprecated...

Sorry for my english, I'm not a native speaker.
Thanks, have a good day.

#Example of Test1 compose file:
version: '3'
services:
  app:
    image: nicolaka/netshoot:latest
    tty: true
    restart: always
    networks:
      app-net:
    external_links:
      - test2-app-1
     
networks:
  app-net:
    external:
      name: bridge_icc_false #created with com.docker.network.bridge.enable_icc=false

icc=false means that inter-container communications are not allowed. If you want to allow inter-container communications, you need to run your containers on a network without this setting.

StackExchange DevOps Q#16388, answer score: 1