Map Docker ports to host?

Support
#1

NethServer Version: NethServer release 7.9.2009 (final)
Module: Docker

I have a Docker container that I need to access from other computers on the network, but I am unable to get the ports open. If I use the default bridge, my container does not have internet access, but if I attach it to the “aqua” network or create my own bridge, it will have internet access but I cannot access it.

I’ve also tried to enable Aeria, but I can’t find it in networks when I enable it.

I’m working in portainer, but if I have to use cli, that’s fine.

Edit: I should say that my container can’t access my DNS server when attached to the default bridge. Whether it has internet access, I don’t know for sure, but it can’t resolve addresses.

Edit2: If I follow the docs to create the Aeria network and then use the pihole template, it errors with “network aeria not found”.

1 Like
#2

Port forward from bridge to aqua.
At least, this is what i’ll do.
I am assuming that you’re not having a RED + GREEN arrangement for this setup, because it’s not that obvious from your post.

#4

Usually default bridge network with published ports should just work, container can go outside and published ports are open in shorewall.

Maybe DNS queries with a firewall?

What kind of container are you running?

For example, to use ping or nslookup I needed to install it in the container:

apt update; apt -y install iputils-ping dnsutils

#6

Did you already try you connect the container to both networks aqua and bridge? This way both VPN and the published ports should work.

#8

Is GREEN interface the bridge?