Looking in the proc/sys/net/ipv4/ip_local_port_range the ephemeral port range is read only from 32768-60999 Run docker swarm on each of the hosts to communicate over the docker overlay bridgeīind to host-docker run -it -rm -p 32768-33768:32768-33768 However a computer typically has many simultaneous connections to different websites, computers, and other things both inside the local network and on the internet.
I want to see the range for ephemeral ports available for the OS running: cat /proc/sys/net/ipv4/iplocalportrange which returns 32768 - 61000. I would like to limit the ephemeral port range that ROS uses to create XMLRPC connection between publisher & subscriber to allow for efficient use of ROS and docker, especially when quickly spinning up new containers for high availability. Answer (1 of 3): Your computer only has on IP address, and even worse your router only has 1 public IP address for the interent. Ask Question Asked 3 years, 11 months ago Modified 3 years, 11 months ago Viewed 790 times -3 I have a server running mysql, ssh and other services. Unfortunately, this will require that I bind 28231 ports at docker run command in order to ensure that ROS dynamically chooses an exposed and binded port to communicate over the network. I will need to bind the container port to the local host port in order for the two ROS nodes to communicate. The Docker container that each of the ROS nodes run in has a local port range in the proc/sys/net/ipv4/ip_local_port_range from 32768-60999.
The issue I am having is that ROS uses XMLRPC to open up a dynamic ephemeral port on the host to establish a socket connection between publisher & subscriber nodes. I am working on a project that will require two Robot Operating System (ROS) nodes running in separate containers on separate hosts on separate LANs to communicate over a router.
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