[5e92cb50239222b]

  $ bwrap --unshare-net --dev-bind / / bash
  $ curl google.com
  curl: (6) Could not resolve host: google.com

Or you could use firejail, or do it manually with `unshare`, or with any of the container runtimes (docker, podman).

https://wiki.archlinux.org/title/Bubblewrap

https://wiki.archlinux.org/title/Firejail

[matusfaro]

Interesting options, wasn't aware of those.

The only minor counter-argument would be laziness as a security threat: the more difficult you make the process, the more likely the user will skip seemingly useless steps, thus compromising security.