I created a new AWS EC2 instance with Ubuntu 20.04 Server as OS and R and Shiny Server as the only applications running on that server. The server is accessible as expected through http://private-ip:3838.
To harden the server, I then implemented v.1.0.0 of the CIS benchmarks.
After executing the script that implements more than hundred remediations automatically (Level 1 Server) I can't access the Shiny server anymore. Is anyone aware of a particular remediation step that prevents Shiny from being acessible as expected?
Many thanks in advance