Package: ecs-tunnel
ECS TunnelPort forwarding for AWS ECS tasks. Hopefully filling a gap until AWS provide similar support natively.Features:Forward local port to local port on taskForward local port to a remote host/port accessible from task (Requires netcat. SeePrerequisites)HTTP Proxy (Requires ncat. SeePrerequisites)PrerequisitesPython 3.8AWS CLI 2.x -https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.htmlAWS Session Manager Plugin -https://docs.aws.amazon.com/systems-manager/latest/userguide/session-manager-working-with-install-plugin.htmlRemote address:port ForwardingTo forward a port to a remote address accessible from the running task, it's necessary to
install a version of netcat that supports-e.AlpineOnAlpinewith Busybox shell (default), netcat
is already available.DebianNetcat VersionDebian PackageOriginal Netcatnetcat-traditionalNMAP NcatncatHTTP ProxyNMAP NcatDebian PackageAlpine Packagencatnmap-ncatInstallationpip3 install ecs-tunnelUsageUsage: ecs-tunnel [OPTIONS]

Options:
  -c, --cluster CLUSTER_NAME      [required]
  -t, --task TASK_ID              [required]
  -n, --container CONTAINER_NAME  Container name. Required if task is running
                                  more than one container
  -L, --local LOCAL_PORT[:REMOTE_ADDR]:REMOTE_PORT
                                  Forward a local port to a remote
                                  address/port. Requires Busybox nc, netcat-
                                  traditional or NMAP Ncat installed (Netcat
                                  with support for "-e") on a given ECS task
  -H, --http-proxy PORT           Setup an HTTP(S) Proxy on given port.
                                  Requires NMAP Ncat installed on given ECS
                                  task
  --region AWS_REGION
  --profile AWS_PROFILE_NAME
  --aws-exec BIN                  aws command line executable. (default:
                                  "aws")
  --remote-port-netcat-exec REMOTE_PORT_NETCAT_EXEC
                                  Remote port netcat command line executable.
                                  (default: "nc")
  --verbose
  --version                       Show the version and exit.
  --help                          Show this message and exit.ExamplesTunnel local port 8000 to port 8080 on the remote task:ecs-tunnel -L 8000:8080 -c my-cluster -t 7e2c99a9c63eb1fc3949d9e966d91f3bTunnel local port 5432 to port 5432 on a remote host:ecs-tunnel -L 5432:my-db-cluster:5432 -c my-cluster -t 7e2c99a9c63eb1fc3949d9e966d91f3bSetup HTTP proxy on port 8888:ecs-tunnel -H 8888 -c my-cluster -t 7e2c99a9c63eb1fc3949d9e966d91f3bBut How?Port forwarding to a port on an EC2 node is currently supported and documented using AWS Systems Manager,
AWS Session Manager Plugin and theaws sessioncommand.
By observing howaws ecs execute-commandalso used the AWS Session Manager, and taking insperation from SSH
port forwarding, it was possible to write a quick wrapper that used the EC2 port forwarding profile with
ECS tasks.Unfortunately, the AWS Systems Manager doesn't seem to expose a way of forwading a local port to a remote
port via the connected task. Instead, we use compatible versions of netcat to provide similar functionality.TodoCheck for remote netcat supportImplement native Python session-manager using websockets