@saikarthik Yes, the proxy addon seems good for what you are looking for.

However, it's not available yet, it'll only be released with Cloudron 6 (I think the devs estimated about 2 weeks, but it's only an estimate).

Also, it does not allow for more fine-grained control, so if you want to restrict only a few things, you'll have to do it manually, and in that case yeah you can take inspiration in the Surfer app for example.