What is the ideal iptables configuration to isolate each containers in 10.x.x.x network from pinging/communicate each other?
I’d expect something like:
iptables -I FORWARD -s 10.x.x.x/8 ! -d 10.0.0.1 -j REJECT
Then make sure that br_netfilter is configured to send bridge to bridge traffic through netfilter.
As I have
sudo modprobe br_netfilter and apply your iptable, it works as expected, except I couldn’t connect to the Internet from containers especially
bridge to bridge traffic through netfilter.
I’m new to this approach, what does this do?
Oh right, oops, you’d want:
iptables -I FORWARD -s 10.x.x.x/8 -d 10.x.x.x/8 -j REJECT
Instead I think.
It works as expected and nice to know about br_netfilter or I would have lose more time to get it work.