You can access ROS terminal tools and SSH from your web browser using Web Terminal cloud element. First, make sure you have added your devices to network on app.husarnet.com - if not, follow getting started tutorial.
Visit Husarnet Marketplace Web Terminal element page. Choose your network in "Add to network" dropdown and select "Add". You will be redirected back to the network screen. Access the terminal using "Web UI" button:
In the terminal screen you can access ROS topic using, for example,
rostopic list or SSH login to other parts of your robotic system using