I tested with nethserver-docker and portainer and it finally worked. I had to put the nxfilter docker container to the aqua network so it gets an IP address there and don’t use published ports. Nethserver uses the nxfilter IP as DNS server. The nxfilter admin site is reachable over virtualhost reverse proxy.
This way we do not need a DNS port redirection.
I just have to check which steps really did the trick and then I am going to write a step by step howto.
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