How to Check Established Network Connections Inside Docker?

Often while working with a Docker container, we need to look at the network connections being used by the container for initial debugging or troubleshooting purposes. You may want to see which IP is listening on a port or how many connections are currently active in the container.

Since a Docker is an isolated environment, running netstat on a server won’t give you network connections of the container. Instead, you have to either get inside a container to run the netstat or run it remotely.

Let’s see both options…

1. Getting inside Docker container to run netstat

2. Run netstat without getting inside the container

#docker

How to Check Established Network Connections Inside Docker?