I keep reading about podman, yet it doesm’t FEEL as mature to me as docker for a normal user like me. What’s your opinion? Did you already switch or do you keep waiting for … for what? When will you switch?
Just alone the fact that podman, a drop in replacement for docker, does implement this in another way proofs that it is bad practice to implement the way docker did.
If you use 8888:8888 it means you want the port to be open on the host’s external interface
I am sorry. That is just bs. When i install apache and start the service and let it listen on port 80 and 443 i still have to add the firewall rule to allow it. This is the default behavior of every other programm.
When you install Apache on the host then yes, you just need a rule to allow the port. But a container runs on a separate network interface, which means you also (1) need to know the name of the interfaces involved, which change for each container and their network mode and the host’s network adapter and so on, and (2) set up rules to forward the port traffic between the container interface and the host interface.
I’m guessing you haven’t checked to see what Docker is actually doing, or you’ve looked only at the OUTPUT and INPUT chains.
I’m also guessing that when you stop Apache you leave the ports open in the firewall. Which is bad practice. Docker takes down the rules when the container stops, which ends up as better security.
I sincerely hope you’re not actually running a machine that’s just a firewall away from the Internet, because blaming Docker for bad security in that case is very shortsighted. Docker is actually helping you by making correct and complete firewall rules.
podman, a drop in replacement for docker, does implement this in another way
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Just alone the fact that podman, a drop in replacement for docker, does implement this in another way proofs that it is bad practice to implement the way docker did.
I am sorry. That is just bs. When i install apache and start the service and let it listen on port 80 and 443 i still have to add the firewall rule to allow it. This is the default behavior of every other programm.
When you install Apache on the host then yes, you just need a rule to allow the port. But a container runs on a separate network interface, which means you also (1) need to know the name of the interfaces involved, which change for each container and their network mode and the host’s network adapter and so on, and (2) set up rules to forward the port traffic between the container interface and the host interface.
I’m guessing you haven’t checked to see what Docker is actually doing, or you’ve looked only at the OUTPUT and INPUT chains.
I’m also guessing that when you stop Apache you leave the ports open in the firewall. Which is bad practice. Docker takes down the rules when the container stops, which ends up as better security.
I sincerely hope you’re not actually running a machine that’s just a firewall away from the Internet, because blaming Docker for bad security in that case is very shortsighted. Docker is actually helping you by making correct and complete firewall rules.
Yeah? How does it do that?