Restrict Internet Access - Docker Container

Question

I have a situation to restrict internet access of the container in load balancer network. for example in that below picture

Only container4

Answer 1

Network creation for access internet

docker network create --subnet=172.19.0.0/16 internet

Network creation for block internet access

docker network create --internal --subnet 10.1.1.0/24 no-internet

If you want to connect docker container into internet

docker network connect internet container-name

If you want to block internet access

docker network connect no-internet container-name

Note

in internal network we can't expose ports to connect outside world, please refer this question for more details